[ 4114.117181][T29228] gre: GRE over IPv4 demultiplexer driver
[ 4115.789108][T29251] ip_gre: GRE over IPv4 tunneling driver
[ 4164.824150][T29823] ip6_gre: GRE over IPv6 tunneling driver
[ 4193.361893][T30167] ping (30167) used greatest stack depth: 22672 bytes left
[ 4198.586700][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4203.577644][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4207.801665][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4212.793635][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!