[ 1539.429909][ T1660] gre: GRE over IPv4 demultiplexer driver
[ 1539.843436][ T1683] ip_gre: GRE over IPv4 tunneling driver
[ 1555.026934][ T2254] ip6_gre: GRE over IPv6 tunneling driver
[ 1560.312243][ T2503] ping (2503) used greatest stack depth: 22736 bytes left
[ 1560.429432][T21847] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1564.997353][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1566.918351][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1568.710352][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1570.693950][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!