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zebra, ripngd: remove ::/64 special-casing

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In the 90ies, IPv4 was believed to exist within IPv6, with some kernels
implementing this belief in code...  Our code here is keyed to "#ifdef
LINUX", yet no Linux from the past 10 years had this, making the code
completely useless.

FreeBSD 10.0 does in fact have a "::/96 via ::1 dev lo0 reject" route.
IMHO we shouldn't mess with that, the admin can filter as neccessary
anyway.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Acked-by: Greg Troxel <gdt@ir.bbn.com>
Acked-by: Feng Lu <lu.feng@6wind.com>
[DL: slightly adjusted commit message to remove misunderstanding]
Acked-by: Paul Jakma <paul@jakma.org>
This commit is contained in:
David Lamparter 2014-06-28 21:26:36 +02:00 committed by Donald Sharp
parent 42bb3dfdfa
commit a0fdba9045
1 changed files with 0 additions and 18 deletions
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18
ripngd/ripngd.c
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@ -930,15 +930,6 @@ ripng_redistribute_add (int type, int sub_type, struct prefix_ipv6 *p,
return; return;
if (IN6_IS_ADDR_LOOPBACK (&p->prefix)) if (IN6_IS_ADDR_LOOPBACK (&p->prefix))
return; return;
#ifdef LINUX
/* XXX As long as the RIPng redistribution is applied to all the connected
* routes, one needs to filter the ::/96 prefixes.
* However it could be a wanted case, it will be removed soon.
*/
if ((IN6_IS_ADDR_V4COMPAT(&p->prefix)) ||
(IN6_IS_ADDR_UNSPECIFIED (&p->prefix) && (p->prefixlen == 96)))
return;
#endif /* LINUX */
rp = route_node_get (ripng->table, (struct prefix *) p); rp = route_node_get (ripng->table, (struct prefix *) p);
rinfo = rp->info; rinfo = rp->info;
@ -1027,15 +1018,6 @@ ripng_redistribute_delete (int type, int sub_type, struct prefix_ipv6 *p,
return; return;
if (IN6_IS_ADDR_LOOPBACK (&p->prefix)) if (IN6_IS_ADDR_LOOPBACK (&p->prefix))
return; return;
#ifdef LINUX
/* XXX As long as the RIPng redistribution is applied to all the connected
* routes, one needs to filter the ::/96 prefixes.
* However it could be a wanted case, it will be removed soon.
*/
if ((IN6_IS_ADDR_V4COMPAT(&p->prefix)) ||
(IN6_IS_ADDR_UNSPECIFIED (&p->prefix) && (p->prefixlen == 96)))
return;
#endif /* LINUX */
rp = route_node_lookup (ripng->table, (struct prefix *) p); rp = route_node_lookup (ripng->table, (struct prefix *) p);