[ 3086.383663][T15992] gre: GRE over IPv4 demultiplexor driver
[ 3088.420738][T16016] ip_gre: GRE over IPv4 tunneling driver
[ 3148.803709][T16588] ip6_gre: GRE over IPv6 tunneling driver
[ 3155.871041][T16649] ping (16649) used greatest stack depth: 22920 bytes left
[ 3190.669536][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3196.558478][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3201.549483][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3207.502433][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!