[ 4640.299814][T25385] gre: GRE over IPv4 demultiplexor driver
[ 4642.469831][T25409] ip_gre: GRE over IPv4 tunneling driver
[ 4709.653699][T25983] ip6_gre: GRE over IPv6 tunneling driver
[ 4739.028641][T26232] ping (26232) used greatest stack depth: 23248 bytes left
[ 4756.211461][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4762.739358][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4768.243385][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4774.707375][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!