where is the nasty cache?
We shuffled some systems around at work. An NFS server now has
a new IP address. On my fedora 30 desktop I see:
nslookup <server> shows the new IP address
host <server> shows the new IP address
ping <server> still pings the OLD address!!!
mount /mountpoint apparent still uses the old IP because it times out.
I'm not running nscd. I'm not running systemd-resolv. I'm
not running dnsmasq or bind as a local cache. I don't have
entries in /etc/hosts for the old IP.
So where is this "helpful" cache that has the old
IP stashed?