[ 4379.554681][T22414] gre: GRE over IPv4 demultiplexer driver
[ 4381.179580][T22437] ip_gre: GRE over IPv4 tunneling driver
[ 4429.847716][T23008] ip6_gre: GRE over IPv6 tunneling driver
[ 4446.395024][T23207] ping (23207) used greatest stack depth: 23456 bytes left
[ 4463.425628][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4468.289562][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4472.770564][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4478.657609][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!