[ 4502.155255][T29671] gre: GRE over IPv4 demultiplexer driver
[ 4503.813670][T29694] ip_gre: GRE over IPv4 tunneling driver
[ 4553.618286][T30267] ip6_gre: GRE over IPv6 tunneling driver
[ 4571.082501][T29116] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 4588.042477][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4592.970328][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4597.322253][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4602.315300][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!