[ 4699.019414][T24889] gre: GRE over IPv4 demultiplexor driver
[ 4701.213230][T24912] ip_gre: GRE over IPv4 tunneling driver
[ 4766.230519][T25485] ip6_gre: GRE over IPv6 tunneling driver
[ 4784.546555][T25641] ping (25641) used greatest stack depth: 23120 bytes left
[ 4805.644070][T25829] ping (25829) used greatest stack depth: 21456 bytes left
[ 4812.004028][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4818.468945][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4823.843958][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4829.988026][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!