Network services fail to start if Network Manager is uninstalled
Issue
Services that listen for network connections on chosen IP addresses rather than 0.0.0.0 may fail to bind during system boot.
A typical example would be sshd, but the problem applies to other daemons as well (i.e. httpd).
Example configuration from /etc/ssh/sshd_config:
Port 22
ListenAddress 10.20.30.10
ListenAddress 127.0.0.1
And the error message as seen during system boot in /var/log/secure:
Mar 31 10:18:03 mysystem sshd[431]: error: Bind to port 22 on 10.20.30.10 failed: Cannot assign requested address.
Environment
Red Hat Enterprise Linux 7.3
Version-Release number of selected component:
systemd-219-30.el7_3.6.x86_64
The following component is not installed in the system:
- NetworkManager
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