[ 4717.451321][T24700] gre: GRE over IPv4 demultiplexor driver
[ 4719.723591][T24723] ip_gre: GRE over IPv4 tunneling driver
[ 4787.053353][T25300] ip6_gre: GRE over IPv6 tunneling driver
[ 4795.622261][T25368] ping (25368) used greatest stack depth: 23392 bytes left
[ 4835.056411][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4841.391365][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4846.895337][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4853.487460][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!