[ 1346.211396][T17627] gre: GRE over IPv4 demultiplexer driver
[ 1346.724548][T17650] ip_gre: GRE over IPv4 tunneling driver
[ 1352.253948][T17902] ping (17902) used greatest stack depth: 23504 bytes left
[ 1362.645363][T18222] ip6_gre: GRE over IPv6 tunneling driver
[ 1373.415684][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1375.463648][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1377.319646][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1379.303652][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!