[ 4481.488432][T26202] gre: GRE over IPv4 demultiplexor driver
[ 4483.485172][T26225] ip_gre: GRE over IPv4 tunneling driver
[ 4513.742980][T26522] ping (26522) used greatest stack depth: 23232 bytes left
[ 4543.080438][T26797] ip6_gre: GRE over IPv6 tunneling driver
[ 4559.460472][T26952] ping (26952) used greatest stack depth: 23008 bytes left
[ 4584.085887][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4589.844838][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4594.708864][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4600.405852][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!