[ 4469.882867][T22463] gre: GRE over IPv4 demultiplexor driver
[ 4471.975292][T22486] ip_gre: GRE over IPv4 tunneling driver
[ 4534.093132][T23057] ip6_gre: GRE over IPv6 tunneling driver
[ 4559.323716][T23261] ping (23261) used greatest stack depth: 22224 bytes left
[ 4584.333624][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4590.413497][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4595.405509][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4601.357501][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!