[ 4456.307443][T26099] gre: GRE over IPv4 demultiplexor driver
[ 4458.310607][T26122] ip_gre: GRE over IPv4 tunneling driver
[ 4518.186910][T26694] ip6_gre: GRE over IPv6 tunneling driver
[ 4525.423382][T26755] ping (26755) used greatest stack depth: 23040 bytes left
[ 4560.436917][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4566.388836][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4571.445838][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4577.332837][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!