(In reply to Fabian Vogt from comment #19) > I wonder whether it might be possible to simply use the kernel's address for > the active mount, at least as a fallback. It can be obtained via findmnt -t > nfs,nfs4 -nro OPTIONS / | sed 's/.*,addr=\([^=]*\)/\1/'. The hint to use findmnt works also in more exotic scenarios like nfsserver in /etc/hosts only (with static setup) or NIS instead DNS in nsswitch.conf. It's worth a beer!