[ 4653.863518][T23286] gre: GRE over IPv4 demultiplexor driver
[ 4656.101918][T23309] ip_gre: GRE over IPv4 tunneling driver
[ 4721.694318][T23883] ip6_gre: GRE over IPv6 tunneling driver
[ 4761.861103][T24227] ping (24227) used greatest stack depth: 21584 bytes left
[ 4768.259137][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4774.658086][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4779.906037][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4786.434031][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!