[ 4056.295635][T24611] gre: GRE over IPv4 demultiplexor driver
[ 4058.390939][T24634] ip_gre: GRE over IPv4 tunneling driver
[ 4119.038743][T25208] ip6_gre: GRE over IPv6 tunneling driver
[ 4140.123001][T25407] ping (25407) used greatest stack depth: 22312 bytes left
[ 4161.135321][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4167.086272][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4172.142225][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4178.222283][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!