[ 4432.790631][T26141] gre: GRE over IPv4 demultiplexor driver
[ 4435.045789][T26171] ip_gre: GRE over IPv4 tunneling driver
[ 4495.543927][T26743] ip6_gre: GRE over IPv6 tunneling driver
[ 4522.451072][T26994] ping (26994) used greatest stack depth: 23088 bytes left
[ 4538.065792][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4543.954752][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4548.881760][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4554.705775][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!