[ 4162.395780][T21080] gre: GRE over IPv4 demultiplexor driver
[ 4163.959267][T21103] ip_gre: GRE over IPv4 tunneling driver
[ 4211.771108][T21675] ip6_gre: GRE over IPv6 tunneling driver
[ 4239.781691][T22018] ping (22018) used greatest stack depth: 23440 bytes left
[ 4244.812582][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4249.611489][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4253.771492][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4258.571474][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!