[ 4666.337722][T25506] gre: GRE over IPv4 demultiplexor driver
[ 4668.641174][T25529] ip_gre: GRE over IPv4 tunneling driver
[ 4736.733334][T26108] ip6_gre: GRE over IPv6 tunneling driver
[ 4760.768068][T26308] ping (26308) used greatest stack depth: 22608 bytes left
[ 4784.407346][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4791.190257][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4796.759257][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4803.415259][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!