[ 4541.313258][T21800] gre: GRE over IPv4 demultiplexer driver
[ 4543.034224][T21823] ip_gre: GRE over IPv4 tunneling driver
[ 4593.974444][T22401] ip6_gre: GRE over IPv6 tunneling driver
[ 4623.613409][T19128] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 4628.476315][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4633.532325][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4637.948280][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4642.940327][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!