[ 1678.545779][T13730] gre: GRE over IPv4 demultiplexer driver
[ 1678.975704][T13753] ip_gre: GRE over IPv4 tunneling driver
[ 1694.353946][T14331] ip6_gre: GRE over IPv6 tunneling driver
[ 1700.688251][T10988] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1701.627104][T14674] ping (14674) used greatest stack depth: 23344 bytes left
[ 1704.439185][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1706.423188][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1708.215195][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1710.200202][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!