[ 4323.565284][T20134] gre: GRE over IPv4 demultiplexor driver
[ 4325.786510][T20158] ip_gre: GRE over IPv4 tunneling driver
[ 4388.444179][T20731] ip6_gre: GRE over IPv6 tunneling driver
[ 4431.679709][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4437.823592][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4442.944582][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4449.087584][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!