[ 4055.591571][T23048] gre: GRE over IPv4 demultiplexor driver
[ 4057.968410][T23072] ip_gre: GRE over IPv4 tunneling driver
[ 4120.087354][T23653] ip6_gre: GRE over IPv6 tunneling driver
[ 4146.358230][T23903] ping (23903) used greatest stack depth: 21384 bytes left
[ 4161.982951][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4167.805914][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4172.733902][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4178.813885][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!