Bug#1103773: openssh-server: systemd unit to After=network-online.target

* Colin Watson <[email protected]> [250421 19:09]:
>Yeah, I think the requested change would be counterproductive for 
>other users: a lot of people want sshd enabled as soon as possible, 
>and most people don't explicitly set ListenAddress.

+1

>>If it helps in your local setup, I'd encourage you to use a local 
>>override file.
>
>I'd be happy to add additional advice about this to README.Debian if 
>somebody else writes it.  But ideally it'd be more fine-grained than 
>just whacking in a dependency on network-online.target; perhaps we can 
>advise people how to configure their system so that ssh.service waits 
>for a particular interface to come up.

Another way might be to set IP_FREEBIND, possibly with an sshd 
config option.

Personally I just enable the ip_nonlocal_bind sysctl on machines 
where I intend to bind services (not just sshd) to specific IP 
addresses.

Chris