In /etc/default/nfs-kernel-server you can specify parameters for rpc.svcgssd:
# Options for rpc.svcgssd. RPCSVCGSSDOPTS="-n"
But the variable is named incorrectly in /lib/systemd/system/rpc-svcgssd.service:
ExecStart=/usr/sbin/rpc.svcgssd $SVCGSSDARGS
In /etc/default/ nfs-kernel- server you can specify parameters for rpc.svcgssd:
# Options for rpc.svcgssd.
RPCSVCGSSDOPTS="-n"
But the variable is named incorrectly in /lib/systemd/ system/ rpc-svcgssd. service:
ExecStart= /usr/sbin/ rpc.svcgssd $SVCGSSDARGS