[ 3300.779203][T23674] gre: GRE over IPv4 demultiplexer driver
[ 3302.393969][T23697] ip_gre: GRE over IPv4 tunneling driver
[ 3350.539577][T24269] ip6_gre: GRE over IPv6 tunneling driver
[ 3370.972395][T24518] ping (24518) used greatest stack depth: 23552 bytes left
[ 3383.806168][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3388.670079][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3392.894065][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3397.758081][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!