[ 4236.564382][T29339] gre: GRE over IPv4 demultiplexer driver
[ 4238.183805][T29362] ip_gre: GRE over IPv4 tunneling driver
[ 4266.378373][T29708] ping (29708) used greatest stack depth: 23328 bytes left
[ 4287.100701][T29938] ip6_gre: GRE over IPv6 tunneling driver
[ 4307.519267][T30187] ping (30187) used greatest stack depth: 23104 bytes left
[ 4320.180652][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4325.045555][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4329.205555][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4334.069566][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!