[ 1524.099263][T14355] gre: GRE over IPv4 demultiplexer driver
[ 1524.527920][T14378] ip_gre: GRE over IPv4 tunneling driver
[ 1539.873877][T14952] ip6_gre: GRE over IPv6 tunneling driver
[ 1549.956699][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1551.939662][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1553.732669][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1555.715683][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!