Systemd-network

lastmod 2026-01-26created 2026-01-261 edits

systemd-network-wait-online

If booting takes a long time at the following step ...

job sysremd-network-wait-online.service/start running ( 1s / no limit) 

Main causes of a long wait here:

1. Network interface does not reach the ready state
2. Waiting for a DHCP response
3. IP assignment delay
4. Wait condition not met on a specific interface (waits for every network interface to be ready, even those not actually needed)

Timeout setting:

# systemd-network-wait-online 의 기본 타임아웃 확인
systemctl show systemd-network-wait-online.service -p TimeoutStartUSec

Diagnosis:

# 현재 네트워크 인터페이스 상태 확인
networkctl list
networkctl status

# 시작 시간 확인
systemd-analyze blame

# 서비스 상세 정보
systemctl show -p ExecStart systemd-network-wait-online.service

See also

• systemd