[ 1423.872138][  T726] gre: GRE over IPv4 demultiplexer driver
[ 1424.296835][  T749] ip_gre: GRE over IPv4 tunneling driver
[ 1439.540686][ T1321] ip6_gre: GRE over IPv6 tunneling driver
[ 1444.816057][ T1572] ping (1572) used greatest stack depth: 23280 bytes left
[ 1449.593993][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1451.577953][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1453.434949][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1455.418954][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!