[ 4379.676301][T29205] gre: GRE over IPv4 demultiplexer driver
[ 4381.330965][T29228] ip_gre: GRE over IPv4 tunneling driver
[ 4431.876192][T29800] ip6_gre: GRE over IPv6 tunneling driver
[ 4453.632428][T30049] ping (30049) used greatest stack depth: 23440 bytes left
[ 4466.902297][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4471.958186][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4476.247177][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4481.175161][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!