rpcbind.socket failed to listen on sockets: Address family not supported by protocol

Using CentOS 7 this problem arose after a reboot and NFS shares would not mount. Trying to start the rpcbind service:

systemctl start rpcbind

gave the following error message via jounralctl -xe :

rpcbind.socket failed to listen on sockets: Address family not supported by protocol

So it looks like

net.ipv6.conf.all.disable_ipv6 = 1

was set in /etc/sysctl.conf But this wasn’t yet incorporated into the initramfs.

Solution

Rebuild the initramfs with:

dracut -v -f

Then reboot.