[ 4732.492658][T24593] gre: GRE over IPv4 demultiplexor driver
[ 4734.710108][T24616] ip_gre: GRE over IPv4 tunneling driver
[ 4799.493625][T25189] ip6_gre: GRE over IPv6 tunneling driver
[ 4807.153816][T25250] ping (25250) used greatest stack depth: 23192 bytes left
[ 4844.922418][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4851.131300][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4856.314308][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4862.458294][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!