[ 4371.813102][T21051] gre: GRE over IPv4 demultiplexer driver
[ 4373.425810][T21074] ip_gre: GRE over IPv4 tunneling driver
[ 4421.906343][T21652] ip6_gre: GRE over IPv6 tunneling driver
[ 4449.918055][T22002] ping (22002) used greatest stack depth: 23488 bytes left
[ 4454.976864][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4459.776676][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4463.936666][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4468.671943][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!