[ 4444.614112][T26134] gre: GRE over IPv4 demultiplexor driver
[ 4446.674331][T26157] ip_gre: GRE over IPv4 tunneling driver
[ 4509.938042][T26736] ip6_gre: GRE over IPv6 tunneling driver
[ 4537.349726][T26985] ping (26985) used greatest stack depth: 23360 bytes left
[ 4553.073546][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4559.152494][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4564.272440][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4570.160457][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!