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Implements support for link-local addresses in BGP.

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Thanks Matthias Schiffer for the original patch.
This commit is contained in:
Ondrej Zajicek
2012-01-08 15:28:27 +01:00
parent eb1451a3a0
commit 53ffbff39f
6 changed files with 91 additions and 23 deletions
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7
proto/bgp/attrs.c
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@@ -1001,10 +1001,13 @@ bgp_update_attrs(struct bgp_proto *p, rte *e, ea_list **attrs, struct linpool *p
}
/* iBGP -> keep next_hop, eBGP multi-hop -> use source_addr,
eBGP single-hop -> keep next_hop if on the same iface */
* eBGP single-hop -> keep next_hop if on the same iface.
* If the next_hop is zero (i.e. link-local), keep only if on the same iface.
*/
a = ea_find(e->attrs->eattrs, EA_CODE(EAP_BGP, BA_NEXT_HOP));
if (a && !p->cf->next_hop_self &&
(p->is_internal || (p->neigh && (e->attrs->iface == p->neigh->iface))))
((p->is_internal && ipa_nonzero(*((ip_addr *) a->u.ptr->data))) ||
(p->neigh && (e->attrs->iface == p->neigh->iface))))
{
/* Leave the original next hop attribute, will check later where does it point */
}