[ 4657.715464][T25584] gre: GRE over IPv4 demultiplexor driver
[ 4659.825707][T25607] ip_gre: GRE over IPv4 tunneling driver
[ 4724.957440][T26183] ip6_gre: GRE over IPv6 tunneling driver
[ 4732.552794][T26245] ping (26245) used greatest stack depth: 23528 bytes left
[ 4771.444387][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4777.908295][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4783.347302][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4789.940313][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!