[ 4352.679483][T21515] gre: GRE over IPv4 demultiplexor driver
[ 4354.766129][T21538] ip_gre: GRE over IPv4 tunneling driver
[ 4414.917830][T22111] ip6_gre: GRE over IPv6 tunneling driver
[ 4451.376351][T22456] ping (22456) used greatest stack depth: 21920 bytes left
[ 4457.266467][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4463.218359][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4468.210387][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4474.162356][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!