[ 4447.287422][T26019] gre: GRE over IPv4 demultiplexor driver
[ 4449.364105][T26043] ip_gre: GRE over IPv4 tunneling driver
[ 4508.776383][T26615] ip6_gre: GRE over IPv6 tunneling driver
[ 4529.447006][T26814] ping (26814) used greatest stack depth: 23488 bytes left
[ 4534.706607][T26864] ping (26864) used greatest stack depth: 23376 bytes left
[ 4550.009436][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4555.705385][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4560.505426][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4566.394380][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!