[ 4038.139520][T20543] gre: GRE over IPv4 demultiplexer driver
[ 4039.709267][T20566] ip_gre: GRE over IPv4 tunneling driver
[ 4059.960863][T20818] ping (20818) used greatest stack depth: 24016 bytes left
[ 4087.462539][T21138] ip6_gre: GRE over IPv6 tunneling driver
[ 4115.615654][T21481] ping (21481) used greatest stack depth: 23648 bytes left
[ 4120.726278][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4125.718219][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4129.941232][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4134.806214][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!