[ 3232.604856][T25538] gre: GRE over IPv4 demultiplexer driver
[ 3234.229627][T25569] ip_gre: GRE over IPv4 tunneling driver
[ 3282.545068][T26240] ip6_gre: GRE over IPv6 tunneling driver
[ 3311.540082][T23784] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3316.212942][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3321.076975][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3325.236961][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3330.035989][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!