The system I pulled the networkd log from had not yet become unreachable but here's a snippet from one that did:
May 27 07:38:18 ip-10-0-4-228 systemd[1]: systemd-networkd.service: Failed with result 'core-dump'.
May 27 07:38:18 ip-10-0-4-228 systemd[1]: Failed to start Network Service.
May 27 07:38:18 ip-10-0-4-228 systemd[1]: Dependency failed for Wait for Network to be Configured.
May 27 07:38:18 ip-10-0-4-228 systemd[1]: systemd-networkd-wait-online.service: Job systemd-networkd-wait-online.service/start failed with result 'dependency'
May 27 07:38:18 ip-10-0-4-228 systemd[1]: systemd-networkd.socket: Failed with result 'service-start-limit-hit'.
The system I pulled the networkd log from had not yet become unreachable but here's a snippet from one that did:
May 27 07:38:18 ip-10-0-4-228 systemd[1]: systemd- networkd. service: Failed with result 'core-dump'. networkd- wait-online. service: Job systemd- networkd- wait-online. service/ start failed with result 'dependency' networkd. socket: Failed with result 'service- start-limit- hit'.
May 27 07:38:18 ip-10-0-4-228 systemd[1]: Failed to start Network Service.
May 27 07:38:18 ip-10-0-4-228 systemd[1]: Dependency failed for Wait for Network to be Configured.
May 27 07:38:18 ip-10-0-4-228 systemd[1]: systemd-
May 27 07:38:18 ip-10-0-4-228 systemd[1]: systemd-