[ 1406.346411][ T3544] gre: GRE over IPv4 demultiplexer driver
[ 1406.788246][ T3567] ip_gre: GRE over IPv4 tunneling driver
[ 1423.609781][ T4138] ip6_gre: GRE over IPv6 tunneling driver
[ 1430.015747][ T4388] ping (4388) used greatest stack depth: 23240 bytes left
[ 1432.227829][   T11] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1435.043785][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1437.476757][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1439.459749][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1441.636742][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!