[ 4657.640110][T25792] gre: GRE over IPv4 demultiplexor driver
[ 4659.817004][T25815] ip_gre: GRE over IPv4 tunneling driver
[ 4725.736699][T26395] ip6_gre: GRE over IPv6 tunneling driver
[ 4754.292950][T26645] ping (26645) used greatest stack depth: 23472 bytes left
[ 4770.867473][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4777.267450][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4782.772413][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4789.235422][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!