[ 3168.236562][T20546] gre: GRE over IPv4 demultiplexor driver
[ 3169.389118][T20571] ip_gre: GRE over IPv4 tunneling driver
[ 3205.658415][T21145] ip6_gre: GRE over IPv6 tunneling driver
[ 3221.144178][T21394] ping (21394) used greatest stack depth: 23360 bytes left
[ 3230.899509][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3234.804455][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3238.131443][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3242.036435][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!