One node refuses to connect

I have an old computer I use as a server, my main computer, and my phone. I want to have syncthing running on the server as master of all of my folders. This was working perfectly a few days ago, now none of my devices will connect to my server. I am able to bypass the server and connect my phone to my computer, but that is not ideal. I am not aware of changing any settings. I have tried dynamic and static ip configuration.

The following is all information regarding the server.

$ syncthing -version
syncthing v0.12.24 "Beryllium Bedbug" (go1.6.2 linux-amd64) builduser@svetlemodry 2016-05-13 12:02:47 UTC
$ uname -a
Linux nas 4.5.4-1-ARCH #1 SMP PREEMPT Wed May 11 22:21:28 CEST 2016 x86_64 GNU/Linux
$ journalctl -u syncthing@marcel -b
-- Logs begin at Mon 2016-03-21 18:12:14 ADT, end at Sun 2016-05-22 23:42:59 ADT. --
May 22 21:50:05 nas systemd[1]: Started Syncthing - Open Source Continuous File Synchronization for marcel.
May 22 21:50:08 nas syncthing[401]: [YOINV] INFO: syncthing v0.12.24 "Beryllium Bedbug" (go1.6.2 linux-amd64) builduser@svetlemodry 2016-05-13 12:02:47 UTC
May 22 21:50:08 nas syncthing[401]: [YOINV] INFO: My ID: CCCCCC
May 22 21:50:08 nas syncthing[401]: [YOINV] INFO: Single thread hash performance is ~136 MB/s
May 22 21:50:09 nas syncthing[401]: [YOINV] OK: Ready to synchronize Music (read-write)
May 22 21:50:09 nas syncthing[401]: [YOINV] OK: Ready to synchronize Pictures (read-write)
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Using discovery server https://discovery-v4-1.syncthing.net/?id=AAAAA
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Using discovery server https://discovery-v4-2.syncthing.net/?id=BBBBB
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Using discovery server https://discovery-v4-3.syncthing.net/?id=CCCC
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Using discovery server https://discovery-v6-1.syncthing.net/?id=AAAAA
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Using discovery server https://discovery-v6-2.syncthing.net/?id=BBBBB
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Using discovery server https://discovery-v6-3.syncthing.net/?id=CCCC
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Device CCCCCC is "nas" at [dynamic]
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Device AAAAAA is "Moto G" at [dynamic]
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Device BBBBBB is "SyntaxError" at [dynamic]
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Completed initial scan (rw) of folder Music
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Completed initial scan (rw) of folder Pictures
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: GUI and API listening on [::]:8384
May 22 21:50:09 nas syncthing[401]: [YOINV] INFO: Access the GUI via the following URL: http://127.0.0.1:8384/
May 22 21:50:12 nas syncthing[401]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 21:50:12 nas syncthing[401]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 21:50:12 nas syncthing[401]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 21:50:12 nas syncthing[401]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 21:50:12 nas syncthing[401]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 21:50:12 nas syncthing[401]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 21:50:12 nas syncthing[401]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 21:50:12 nas syncthing[401]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 21:50:19 nas syncthing[401]: [YOINV] INFO: No UPnP device detected
May 22 21:50:19 nas syncthing[401]: [YOINV] INFO: Joined relay relay://23.92.71.120:443/?id=DDDDD&pingInterval=1m0s&networkTimeout=2m0s&sessionLimitBp
May 22 22:04:28 nas systemd[1]: syncthing@marcel.service: Service hold-off time over, scheduling restart.
May 22 22:04:28 nas systemd[1]: Stopped Syncthing - Open Source Continuous File Synchronization for marcel.
May 22 22:04:28 nas systemd[1]: Started Syncthing - Open Source Continuous File Synchronization for marcel.
May 22 22:04:28 nas syncthing[449]: [YOINV] INFO: syncthing v0.12.24 "Beryllium Bedbug" (go1.6.2 linux-amd64) builduser@svetlemodry 2016-05-13 12:02:47 UTC
May 22 22:04:28 nas syncthing[449]: [YOINV] INFO: My ID: CCCCCC
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Single thread hash performance is ~136 MB/s
May 22 22:04:29 nas syncthing[449]: [YOINV] OK: Ready to synchronize Music (read-write)
May 22 22:04:29 nas syncthing[449]: [YOINV] OK: Ready to synchronize Pictures (read-write)
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Using discovery server https://discovery-v4-1.syncthing.net/?id=AAAAA
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Using discovery server https://discovery-v4-2.syncthing.net/?id=BBBBB
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Using discovery server https://discovery-v4-3.syncthing.net/?id=CCCC
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Using discovery server https://discovery-v6-1.syncthing.net/?id=AAAAA
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Using discovery server https://discovery-v6-2.syncthing.net/?id=BBBBB
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Using discovery server https://discovery-v6-3.syncthing.net/?id=CCCC
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Completed initial scan (rw) of folder Pictures
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Completed initial scan (rw) of folder Music
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Device AAAAAA is "Moto G" at [dynamic]
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Device BBBBBB is "SyntaxError" at [dynamic]
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Device CCCCCC is "nas" at [dynamic]
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: GUI and API listening on [::]:8384
May 22 22:04:29 nas syncthing[449]: [YOINV] INFO: Access the GUI via the following URL: http://127.0.0.1:8384/
May 22 22:04:32 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 22:04:32 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 22:04:32 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 22:04:32 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 22:04:32 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 22:04:32 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 22:04:32 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 22:04:32 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 22:04:39 nas syncthing[449]: [YOINV] INFO: No UPnP device detected
May 22 22:04:39 nas syncthing[449]: [YOINV] INFO: Joined relay relay://43.239.250.13:443/?id=M2N5WIQ-YWYOYKA-AMCMPNW-475AC44-XB24ITK-PHDVAA3-HMJKZ3Q-KIVWBQV&pingInterval=1m0s&networkTimeout=2m0s&sessionLimitB
May 22 22:34:39 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 22:34:39 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 22:34:39 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 22:34:39 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 22:34:39 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 22:34:39 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 22:34:39 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 22:34:39 nas syncthing[449]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 22:53:50 nas systemd[1]: syncthing@marcel.service: Service hold-off time over, scheduling restart.
May 22 22:53:50 nas systemd[1]: Stopped Syncthing - Open Source Continuous File Synchronization for marcel.
May 22 22:53:50 nas systemd[1]: Started Syncthing - Open Source Continuous File Synchronization for marcel.
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: syncthing v0.12.24 "Beryllium Bedbug" (go1.6.2 linux-amd64) builduser@svetlemodry 2016-05-13 12:02:47 UTC
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: My ID: CCCCCC
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Single thread hash performance is ~136 MB/s
May 22 22:53:50 nas syncthing[1658]: [YOINV] OK: Ready to synchronize Music (read-write)
May 22 22:53:50 nas syncthing[1658]: [YOINV] OK: Ready to synchronize Pictures (read-write)
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Using discovery server https://discovery-v4-1.syncthing.net/?id=AAAAA
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Using discovery server https://discovery-v4-2.syncthing.net/?id=BBBBB
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Using discovery server https://discovery-v4-3.syncthing.net/?id=CCCC
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Using discovery server https://discovery-v6-1.syncthing.net/?id=AAAAA
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Using discovery server https://discovery-v6-2.syncthing.net/?id=BBBBB
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Using discovery server https://discovery-v6-3.syncthing.net/?id=CCCC
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Completed initial scan (rw) of folder Music
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Completed initial scan (rw) of folder Pictures
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Device CCCCCC is "nas" at [dynamic]
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Device AAAAAA is "Moto G" at [dynamic]
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Device BBBBBB is "SyntaxError" at [dynamic]
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: GUI and API listening on [::]:8384
May 22 22:53:50 nas syncthing[1658]: [YOINV] INFO: Access the GUI via the following URL: http://127.0.0.1:8384/
May 22 22:53:58 nas syncthing[1658]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 22:53:58 nas syncthing[1658]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 22:53:58 nas syncthing[1658]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 22:53:58 nas syncthing[1658]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 22:53:58 nas syncthing[1658]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 22:53:58 nas syncthing[1658]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 22:53:58 nas syncthing[1658]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 22:53:58 nas syncthing[1658]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 22:54:00 nas syncthing[1658]: [YOINV] INFO: No UPnP device detected
May 22 22:54:01 nas syncthing[1658]: [YOINV] INFO: Joined relay relay://198.27.83.73:22067/?id=6CIJTYB-PTIPRR3-D2LWEAP-5D5KA73-MKS5BSL-6OTAZXG-XXSOE22-JCQGIQ6&pingInterval=1m0s&networkTimeout=2m0s&sessionLimi
May 22 22:57:47 nas syncthing[1658]: [YOINV] INFO: Restarting
May 22 22:57:47 nas syncthing[1658]: [YOINV] OK: Exiting
May 22 22:57:48 nas systemd[1]: syncthing@marcel.service: Service hold-off time over, scheduling restart.
May 22 22:57:48 nas systemd[1]: Stopped Syncthing - Open Source Continuous File Synchronization for marcel.
May 22 22:57:48 nas systemd[1]: Started Syncthing - Open Source Continuous File Synchronization for marcel.
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: syncthing v0.12.24 "Beryllium Bedbug" (go1.6.2 linux-amd64) builduser@svetlemodry 2016-05-13 12:02:47 UTC
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: My ID: CCCCCC
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Single thread hash performance is ~136 MB/s
May 22 22:57:48 nas syncthing[1670]: [YOINV] OK: Ready to synchronize Music (read-write)
May 22 22:57:48 nas syncthing[1670]: [YOINV] OK: Ready to synchronize Pictures (read-write)
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Using discovery server https://discovery-v4-1.syncthing.net/?id=AAAAA
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Using discovery server https://discovery-v4-2.syncthing.net/?id=BBBBB
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Using discovery server https://discovery-v4-3.syncthing.net/?id=CCCC
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Using discovery server https://discovery-v6-1.syncthing.net/?id=AAAAA
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Using discovery server https://discovery-v6-2.syncthing.net/?id=BBBBB
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Using discovery server https://discovery-v6-3.syncthing.net/?id=CCCC
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Completed initial scan (rw) of folder Pictures
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Device AAAAAA is "Moto G" at [dynamic]
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Device BBBBBB is "SyntaxError" at [tcp://192.168.0.176]
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Device CCCCCC is "nas" at [dynamic]
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Completed initial scan (rw) of folder Music
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: GUI and API listening on [::]:8384
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: Access the GUI via the following URL: http://127.0.0.1:8384/
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 22:57:48 nas syncthing[1670]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 22:57:50 nas syncthing[1670]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:45364-192.168.0.176:22000 (direct-dial)
May 22 22:57:50 nas syncthing[1670]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 22:57:51 nas syncthing[1670]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:45386-192.168.0.176:22000 (direct-dial)
May 22 22:57:51 nas syncthing[1670]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 22:57:54 nas syncthing[1670]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:45418-192.168.0.176:22000 (direct-dial)
May 22 22:57:54 nas syncthing[1670]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 22:57:58 nas syncthing[1670]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:45474-192.168.0.176:22000 (direct-dial)
May 22 22:57:58 nas syncthing[1670]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 22:57:58 nas syncthing[1670]: [YOINV] INFO: No UPnP device detected
May 22 22:57:59 nas syncthing[1670]: [YOINV] INFO: Joined relay relay://104.233.126.133:22067/?id=VV5LDK7-R2KKNQS-MGVIVXJ-SZKST2R-UL3SCF2-LZJPY3U-KAFZHP2-NQODLQQ&pingInterval=1m0s&networkTimeout=2m0s&sessionL
May 22 22:58:06 nas syncthing[1670]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:45512-192.168.0.176:22000 (direct-dial)
May 22 22:58:06 nas syncthing[1670]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 22:58:22 nas syncthing[1670]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:45514-192.168.0.176:22000 (direct-dial)
May 22 22:58:22 nas syncthing[1670]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 22:58:54 nas syncthing[1670]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:45516-192.168.0.176:22000 (direct-dial)
May 22 22:58:54 nas syncthing[1670]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 22:59:54 nas syncthing[1670]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:45526-192.168.0.176:22000 (direct-dial)
May 22 22:59:54 nas syncthing[1670]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:00:54 nas syncthing[1670]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:45530-192.168.0.176:22000 (direct-dial)
May 22 23:00:54 nas syncthing[1670]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:01:07 nas syncthing[1670]: [YOINV] INFO: Shutting down
May 22 23:01:07 nas syncthing[1670]: [YOINV] OK: Exiting
May 22 23:03:43 nas systemd[1]: Started Syncthing - Open Source Continuous File Synchronization for marcel.
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: syncthing v0.12.24 "Beryllium Bedbug" (go1.6.2 linux-amd64) builduser@svetlemodry 2016-05-13 12:02:47 UTC
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: My ID: CCCCCC
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Single thread hash performance is ~136 MB/s
May 22 23:03:43 nas syncthing[1710]: [YOINV] OK: Ready to synchronize Music (read-write)
May 22 23:03:43 nas syncthing[1710]: [YOINV] OK: Ready to synchronize Pictures (read-write)
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Using discovery server https://discovery-v4-1.syncthing.net/?id=AAAAA
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Using discovery server https://discovery-v4-2.syncthing.net/?id=BBBBB
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Using discovery server https://discovery-v4-3.syncthing.net/?id=CCCC
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Using discovery server https://discovery-v6-1.syncthing.net/?id=AAAAA
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Using discovery server https://discovery-v6-2.syncthing.net/?id=BBBBB
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Using discovery server https://discovery-v6-3.syncthing.net/?id=CCCC
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Completed initial scan (rw) of folder Pictures
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Completed initial scan (rw) of folder Music
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Device CCCCCC is "nas" at [dynamic]
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Device AAAAAA is "Moto G" at [dynamic]
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Device BBBBBB is "SyntaxError" at [tcp://192.168.0.176:22001]
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: GUI and API listening on [::]:8384
May 22 23:03:43 nas syncthing[1710]: [YOINV] INFO: Access the GUI via the following URL: http://127.0.0.1:8384/
May 22 23:03:48 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 23:03:48 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 23:03:48 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 23:03:48 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 23:03:48 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 23:03:48 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 23:03:48 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 23:03:48 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 23:03:53 nas syncthing[1710]: [YOINV] INFO: No UPnP device detected
May 22 23:03:55 nas syncthing[1710]: [YOINV] INFO: Joined relay relay://104.131.189.56:22067/?id=XDT4TNB-MF5STUE-JB4EY5S-VX4MSNT-4YJNAFV-YR3KRO5-JQDLUBR-D5UL6QS&pingInterval=1m0s&networkTimeout=2m0s&sessionLi
May 22 23:21:25 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54559 (direct-accept)
May 22 23:21:26 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:21:38 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54613 (direct-accept)
May 22 23:21:38 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:21:41 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54615 (direct-accept)
May 22 23:21:41 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:21:45 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54622 (direct-accept)
May 22 23:21:45 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:21:53 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54626 (direct-accept)
May 22 23:21:53 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:22:09 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54630 (direct-accept)
May 22 23:22:09 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:23:09 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54710 (direct-accept)
May 22 23:23:09 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:24:09 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54740 (direct-accept)
May 22 23:24:10 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:24:35 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54781 (direct-accept)
May 22 23:24:35 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: write tcp 192.168.0.120:22000->192.168.0.176:54781: write: connection r
May 22 23:24:46 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54846 (direct-accept)
May 22 23:24:46 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:24:58 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54851 (direct-accept)
May 22 23:24:58 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: write tcp 192.168.0.120:22000->192.168.0.176:54851: write: connection r
May 22 23:25:12 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54854 (direct-accept)
May 22 23:25:12 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:25:30 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54861 (direct-accept)
May 22 23:25:30 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:25:56 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54865 (direct-accept)
May 22 23:25:56 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:26:06 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54906 (direct-accept)
May 22 23:26:06 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: write tcp 192.168.0.120:22000->192.168.0.176:54906: write: connection r
May 22 23:26:09 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54930 (direct-accept)
May 22 23:26:09 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:26:12 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54962 (direct-accept)
May 22 23:26:12 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:26:18 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:54977 (direct-accept)
May 22 23:26:18 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:33:58 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:55332 (direct-accept)
May 22 23:33:58 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: write tcp 192.168.0.120:22000->192.168.0.176:55332: write: connection r
May 22 23:33:59 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 23:33:59 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type upnp:rootdevice
May 22 23:33:59 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 23:33:59 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type uuid:b91ddd33-f4c5-747b-ba4d-48ee0c6b0ec4
May 22 23:33:59 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 23:33:59 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:device:WFADevice:1
May 22 23:33:59 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 23:33:59 nas syncthing[1710]: [YOINV] INFO: UPnP parse: unrecognized UPnP device of type urn:schemas-wifialliance-org:service:WFAWLANConfig:1
May 22 23:34:58 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:55345 (direct-accept)
May 22 23:34:58 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:35:58 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:55353 (direct-accept)
May 22 23:35:58 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: write tcp 192.168.0.120:22000->192.168.0.176:55353: write: connection r
May 22 23:36:58 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:55357 (direct-accept)
May 22 23:36:58 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: unknown protocol version 0x9
May 22 23:42:59 nas syncthing[1710]: [YOINV] INFO: Established secure connection to BBBBBB at 192.168.0.120:22000-192.168.0.176:55449 (direct-accept)
May 22 23:42:59 nas syncthing[1710]: [YOINV] INFO: Connection to BBBBBB closed: write tcp 192.168.0.120:22000->192.168.0.176:55449: write: connection r

Upgrading to the latest version seems to have fixed it. Should have read the banner. Oops

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