This causes problems for clevis, that depends on ncat to unlock LUKS
devices upon boot.
Issue can be reproduced with `ncat -U /dev/null'
Problem:
ncat -U /dev/null
Segmentation fault (core dumped)
Expected:
ncat -U /dev/null
Ncat: Connection refused.
Upstream: f6b40614e4
Signed-off-by: Sergio Correia <scorreia@redhat.com>