[ 4340.426389][T20304] gre: GRE over IPv4 demultiplexor driver
[ 4342.582933][T20327] ip_gre: GRE over IPv4 tunneling driver
[ 4408.469051][T20901] ip6_gre: GRE over IPv6 tunneling driver
[ 4436.829420][T21151] ping (21151) used greatest stack depth: 21584 bytes left
[ 4453.062131][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4459.142027][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4464.325985][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4470.342035][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!