kdump fails to save a vmcore when a short host name is specified as a network target

Issue

• kdump fails to save a vmcore when a short host name is specified as an nfs mount target:

Note: The following is an example etc/kump.conf

core_collector makedumpfile -d 31 -c
net host123:/crashdumps

• Serial console logs:

...
Saving to remote location host123:/crashdumps
mount: host123: Host name lookup failure
mount: nfsmount failed: Success
mount: Mounting host123:/crashdumps on /mnt failed: Success
Attempting to enter user-space to capture vmcore
...