[ 1525.282168][ T2396] gre: GRE over IPv4 demultiplexer driver
[ 1525.744699][ T2419] ip_gre: GRE over IPv4 tunneling driver
[ 1541.375714][ T2991] ip6_gre: GRE over IPv6 tunneling driver
[ 1546.869642][ T3240] ping (3240) used greatest stack depth: 23352 bytes left
[ 1551.651622][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1553.635592][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1555.490589][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1557.475592][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!