[ 4137.972236][T28658] gre: GRE over IPv4 demultiplexer driver
[ 4139.588761][T28681] ip_gre: GRE over IPv4 tunneling driver
[ 4187.548826][T29253] ip6_gre: GRE over IPv6 tunneling driver
[ 4211.372263][T29546] ping (29546) used greatest stack depth: 23280 bytes left
[ 4220.612799][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4225.540751][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4229.764761][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4234.435759][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!