[ 4612.957343][T25095] gre: GRE over IPv4 demultiplexor driver
[ 4615.037282][T25119] ip_gre: GRE over IPv4 tunneling driver
[ 4636.882331][T25323] ping (25323) used greatest stack depth: 23232 bytes left
[ 4677.813505][T25692] ip6_gre: GRE over IPv6 tunneling driver
[ 4685.274476][T25753] ping (25753) used greatest stack depth: 23136 bytes left
[ 4705.486205][T25941] ping (25941) used greatest stack depth: 23008 bytes left
[ 4721.526367][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4727.541316][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4732.725311][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4738.869307][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!