Hi,
I'm using cymru[1] bogon feed onto a router receiving several full tables.
On this router I have:
neighbor $CYMRU_PEER_v4 {
descr cymru-fullbogon-v4-001
local-address $NERIM_MY_v4
max-prefix 9550 restart 10
}
bgpctl show rib correctly shows the prefixes being added with nexthop
$CYMRU_PEER_v4
This nexthop however is invalid (because I can't reach it directly),
which doesn't matter to me since this traffic should be blackholed
anyway.
To blackhole this traffic I use:
match from group cymru_bogons set nexthop blackhole
The traffic never gets blackholed....unless I use
set nexthop $NERIM_PEER_v4
in the neighbor stanza.
Is it a normal behavior, a misunderstanding on my side, or a bug ?
Thanks
Laurent
PS:
$CYMRU_PEER_v4 = IPv4 address of the cymru router
$NERIM_MY_v4 = my public IPv4 address
$NERIM_PEER_v4 = my IPv4 gateway (ISP side)
[1]: http://www.team-cymru.org/Services/Bogons/bgp-examples.html
