[ 3392.574017][T28722] gre: GRE over IPv4 demultiplexor driver
[ 3393.692463][T28746] ip_gre: GRE over IPv4 tunneling driver
[ 3427.856253][T29320] ip6_gre: GRE over IPv6 tunneling driver
[ 3431.707097][T29381] ping (29381) used greatest stack depth: 23088 bytes left
[ 3451.010440][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3454.594414][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3457.731380][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3461.315406][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!