Docker service 실행 안될 때

$ sudo service docker start  
Redirecting to /bin/systemctl start docker.service  
Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.

실행하려니 실패.

$ systemctl status docker.service  
● docker.service - Docker Application Container Engine  
   Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)  
   Active: failed (Result: exit-code) since 화 2022-04-05 12:17:01 KST; 12s ago  
     Docs: [https://docs.docker.com](https://docs.docker.com)  
  Process: 25074 ExecStart=/usr/bin/dockerd (code=exited, status=1/FAILURE)  
 Main PID: 25074 (code=exited, status=1/FAILURE)

상세 사유 없어서 확인이 안됨.

이럴땐 도커 데몬을 직접 실행해본다.

$ sudo dockerd --debug  
Error starting daemon: Error initializing network controller: Error creating default "bridge" network: failed to allocate gateway (10.252.0.0): Address already in use

나의 경우 bridge ip 설정 떄문에 실패한 것.