[ 3150.734546][T27785] gre: GRE over IPv4 demultiplexor driver
[ 3152.086008][T27815] ip_gre: GRE over IPv4 tunneling driver
[ 3193.644090][T28387] ip6_gre: GRE over IPv6 tunneling driver
[ 3208.545970][T28638] ping (28638) used greatest stack depth: 23568 bytes left
[ 3211.526444][T26100] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3218.309743][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3222.084737][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3225.348732][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3229.252773][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!