[ 3632.164538][T28425] gre: GRE over IPv4 demultiplexor driver
[ 3634.517435][T28453] ip_gre: GRE over IPv4 tunneling driver
[ 3696.760098][T29024] ip6_gre: GRE over IPv6 tunneling driver
[ 3723.510770][T29274] ping (29274) used greatest stack depth: 23632 bytes left
[ 3739.516346][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3745.597302][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3750.715309][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3756.795262][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!