[ 3177.231014][T22578] gre: GRE over IPv4 demultiplexor driver
[ 3179.241698][T22602] ip_gre: GRE over IPv4 tunneling driver
[ 3240.170991][T23181] ip6_gre: GRE over IPv6 tunneling driver
[ 3266.455988][T23430] ping (23430) used greatest stack depth: 21832 bytes left
[ 3282.553582][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3288.569494][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3293.625513][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3299.642491][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!