So you're saying the client is probably not finding the AD KDC through DNS SRV calls?
I think that I've tested all the DNS configs that are called for in the documentation.
What could I do to test whether the AD realm's KDC is being discovered?
Here's what I've tried to see if the dns is correctly configured:
[root@freeipaclient ~]# dig +short -t SRV _kerberos._tcp.dc._msdcs.cs.domain.dom
0 100 88 ipa.cs.domain.dom.
[root@freeipaclient ~]# dig +short -t SRV _kerberos._tcp.dc._msdcs.domain.dom
0 100 88 kdc1.domain.dom.
0 100 88 kdc2.domain.dom.