TrueNAS Core - gssd doesn't start, NFS shares can't be mounted

Hi there,

currently running TrueNAS-13.0-U6.1 I encounter a problem since about TrueNAS-13.0-U5.
After startup of TrueNAS my clients can’t mount my (kerberized) NFS shares. I’ve to either disable/enable NFS switch in Services or service gssd start and then service nfsd restart.
And that already shows where the problem lays: nfsd is running, but gssd isn’t. But after the system is up, gssd comes up when disable/re-enable the NFS service.

I don’t see any error from gss in /var/log/messages. Does anyone of you also encounter that problem or at has advice what to test or at least to enable debugging?