[ 2620.627575][T19267] gre: GRE over IPv4 demultiplexor driver
[ 2622.399534][T19290] ip_gre: GRE over IPv4 tunneling driver
[ 2676.486996][T19866] ip6_gre: GRE over IPv6 tunneling driver
[ 2703.725784][T20159] ping (20159) used greatest stack depth: 22496 bytes left
[ 2713.870268][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2719.118210][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2723.598178][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2728.911187][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!