[ 4213.893192][T29218] gre: GRE over IPv4 demultiplexer driver
[ 4215.515875][T29241] ip_gre: GRE over IPv4 tunneling driver
[ 4264.413871][T29813] ip6_gre: GRE over IPv6 tunneling driver
[ 4284.987330][T30063] ping (30063) used greatest stack depth: 22928 bytes left
[ 4288.865122][T28295] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 4297.631953][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4302.496970][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4306.719957][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4311.583970][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!