[ 1384.656618][T20855] gre: GRE over IPv4 demultiplexer driver
[ 1385.159417][T20878] ip_gre: GRE over IPv4 tunneling driver
[ 1402.644572][T21450] ip6_gre: GRE over IPv6 tunneling driver
[ 1407.857529][T21699] ping (21699) used greatest stack depth: 22288 bytes left
[ 1413.002048][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1415.242013][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1417.226032][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1419.338018][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!