[ 3550.912627][T17674] gre: GRE over IPv4 demultiplexor driver
[ 3552.991861][T17697] ip_gre: GRE over IPv4 tunneling driver
[ 3579.921227][T17949] ping (17949) used greatest stack depth: 22736 bytes left
[ 3615.125291][T18269] ip6_gre: GRE over IPv6 tunneling driver
[ 3658.424776][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3664.633683][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3669.624696][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3675.576684][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!