[ 4424.619344][T29127] gre: GRE over IPv4 demultiplexer driver
[ 4426.374480][T29150] ip_gre: GRE over IPv4 tunneling driver
[ 4476.786350][T29721] ip6_gre: GRE over IPv6 tunneling driver
[ 4506.331840][T30065] ping (30065) used greatest stack depth: 22928 bytes left
[ 4511.591772][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4516.775659][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4521.191686][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4526.183664][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!