[ 1464.114234][T30952] gre: GRE over IPv4 demultiplexer driver
[ 1464.582007][T30975] ip_gre: GRE over IPv4 tunneling driver
[ 1480.126495][T31553] ip6_gre: GRE over IPv6 tunneling driver
[ 1485.506286][T31803] ping (31803) used greatest stack depth: 23344 bytes left
[ 1487.574209][ T6784] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1490.239136][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1492.222150][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1494.014154][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1495.999144][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!