[ 1443.853040][T27551] gre: GRE over IPv4 demultiplexer driver
[ 1444.375109][T27574] ip_gre: GRE over IPv4 tunneling driver
[ 1460.463110][T28145] ip6_gre: GRE over IPv6 tunneling driver
[ 1467.112920][T28438] ping (28438) used greatest stack depth: 23168 bytes left
[ 1471.111561][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1473.159517][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1475.014527][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1477.062539][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!