[ 4743.484037][T24693] gre: GRE over IPv4 demultiplexor driver
[ 4745.747588][T24716] ip_gre: GRE over IPv4 tunneling driver
[ 4817.530561][T25289] ip6_gre: GRE over IPv6 tunneling driver
[ 4836.248454][T25444] ping (25444) used greatest stack depth: 23056 bytes left
[ 4864.025561][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4870.232453][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4875.544459][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4882.009446][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 5048.500971][T27244] ping (27244) used greatest stack depth: 22928 bytes left