[ 4455.268624][T26402] gre: GRE over IPv4 demultiplexor driver
[ 4457.234461][T26425] ip_gre: GRE over IPv4 tunneling driver
[ 4517.289515][T26998] ip6_gre: GRE over IPv6 tunneling driver
[ 4559.050418][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4564.746384][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4569.611363][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4575.435381][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4668.394582][T28431] ping (28431) used greatest stack depth: 22864 bytes left
[ 4784.792177][T29518] ping (29518) used greatest stack depth: 22256 bytes left