Hello, if starting /etc/init.d/krb5kdc, kerberos binds to eth1 and the *current* ip of ppp0. # netstat -nap | grep :750\\b udp 0 0 91.9.220.166:750 0.0.0.0:* 3180/krb5kdc udp 0 0 192.168.0.1:750 0.0.0.0:* 3180/krb5kdc # netstat -nap | grep :88\\b tcp 0 0 0.0.0.0:88 0.0.0.0:* LISTEN 3180/krb5kdc udp 0 0 91.9.220.166:88 0.0.0.0:* 3180/krb5kdc udp 0 0 192.168.0.1:88 0.0.0.0:* 3180/krb5kdc Since my internet provider changes the address of ppp0 for every 24 hours and since the last start of /etc/init.d/krb5kdc was 10 days ago (with the last reboot of my server), kerberos still binds to the old ip of ppp0. How can I force krb5kdc to bind *only* to my local address 192.168.0.1 (eth1) and not to bind also to the current ip of ppp0? Thank you! regards Olaf