[ 3177.240384][T23678] gre: GRE over IPv4 demultiplexer driver
[ 3178.866251][T23701] ip_gre: GRE over IPv4 tunneling driver
[ 3227.204360][T24273] ip6_gre: GRE over IPv6 tunneling driver
[ 3247.845287][T24523] ping (24523) used greatest stack depth: 23552 bytes left
[ 3260.755968][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3265.619861][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3269.778851][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3274.642895][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!