[ 4177.422951][T27219] gre: GRE over IPv4 demultiplexor driver
[ 4179.015490][T27242] ip_gre: GRE over IPv4 tunneling driver
[ 4227.518292][T27813] ip6_gre: GRE over IPv6 tunneling driver
[ 4256.373851][T28156] ping (28156) used greatest stack depth: 23440 bytes left
[ 4261.557326][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4266.549234][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4270.773284][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4275.702222][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!