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isisd, ospf6d, ripngd: Do not allow v6 LL's to be redist connected in

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The rib process of handling routes has been unified a bit more
and as a result v6 LL routes are now showing up as a result
of a `redistribute connected`.  Doing anything with these
routes is a policy decision that should be enforced by the
individual routing daemons not by zebra.  As such add a bit
of code to isisd, ripngd and opsf6d to handle them.  The bgp daemon
already handles this situation.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
This commit is contained in:
Donald Sharp 2019-02-22 10:20:51 -05:00
parent 906b54ddba
commit 9fb2b87997
3 changed files with 10 additions and 0 deletions
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4
isisd/isis_zebra.c
View File

@ -362,6 +362,10 @@ static int isis_zebra_read(int command, struct zclient *zclient,
if (zapi_route_decode(zclient->ibuf, &api) < 0)
return -1;
if (api.prefix.family == AF_INET6
&& IN6_IS_ADDR_LINKLOCAL(&api.prefix.u.prefix6))
return 0;
/*
* Avoid advertising a false default reachability. (A default
* route installed by IS-IS gets redistributed from zebra back

3
ospf6d/ospf6_zebra.c
View File

@ -226,6 +226,9 @@ static int ospf6_zebra_read_route(int command, struct zclient *zclient,
if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
return 0;
if (IN6_IS_ADDR_LINKLOCAL(&api.prefix.u.prefix6))
return 0;
ifindex = api.nexthops[0].ifindex;
nexthop = &api.nexthops[0].gate.ipv6;

3
ripngd/ripng_zebra.c
View File

@ -126,6 +126,9 @@ static int ripng_zebra_read_route(int command, struct zclient *zclient,
if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
return 0;
if (IN6_IS_ADDR_LINKLOCAL(&api.prefix.u.prefix6))
return 0;
nexthop = api.nexthops[0].gate.ipv6;
ifindex = api.nexthops[0].ifindex;