[ 4174.823934][T28704] gre: GRE over IPv4 demultiplexer driver
[ 4176.517551][T28727] ip_gre: GRE over IPv4 tunneling driver
[ 4226.364371][T29298] ip6_gre: GRE over IPv6 tunneling driver
[ 4255.054193][T29641] ping (29641) used greatest stack depth: 23440 bytes left
[ 4260.202062][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4265.130127][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4269.416931][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4274.344951][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4345.461046][T30679] ping (30679) used greatest stack depth: 23024 bytes left