[ 3221.310139][T22577] gre: GRE over IPv4 demultiplexor driver
[ 3223.433363][T22601] ip_gre: GRE over IPv4 tunneling driver
[ 3284.617108][T23174] ip6_gre: GRE over IPv6 tunneling driver
[ 3311.345049][T23423] ping (23423) used greatest stack depth: 21760 bytes left
[ 3326.880840][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3332.768751][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3337.760760][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3343.840755][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!