[ 4254.397841][T19811] gre: GRE over IPv4 demultiplexor driver
[ 4256.066933][T19834] ip_gre: GRE over IPv4 tunneling driver
[ 4303.966921][T20408] ip6_gre: GRE over IPv6 tunneling driver
[ 4331.629930][T20751] ping (20751) used greatest stack depth: 23440 bytes left
[ 4336.687594][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4341.551532][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4345.775523][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4350.575540][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4516.079002][T22927] ping (22927) used greatest stack depth: 23184 bytes left