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Nest: Handle PtP links in recursive route update

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Underlying (IGP) route may lead to PtP link, in this case it does not
need gateway. Which is different than direct route without gateway.

When recursive (BGP) route uses PtP route, it should not use recursive
next hop as immediate next hop, while for direct routes it should.
This commit is contained in:
Ondrej Zajicek (work) 2019-10-10 15:06:32 +02:00
parent cb2b6e0494
commit 9eace84342
1 changed files with 2 additions and 0 deletions
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2
nest/rt-table.c
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@ -2137,6 +2137,8 @@ no_nexthop:
nhp->gw = nh->gw; /* Router nexthop */
nhp->flags |= (nh->flags & RNF_ONLINK);
}
else if (!(nh->iface->flags & IF_MULTIACCESS) || (nh->iface->flags & IF_LOOPBACK))
nhp->gw = IPA_NONE; /* PtP link - no need for nexthop */
else if (ipa_nonzero(he->link))
nhp->gw = he->link; /* Device nexthop with link-local address known */
else