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isisd: Consider non-mt links usable when either v4 or v6 works

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When we run in non-mt mode, we should consider links which have either
working IPv4 or IPv6 active and look at the neighbors nlpids to judge
wether a link is usable.

Fixes: #3336
This commit is contained in:
Christian Franke 2018-11-20 19:18:42 +01:00
parent 6b2ddd675c
commit 7d26945ad8
1 changed files with 1 additions and 1 deletions
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2
isisd/isis_mt.c
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@ -398,7 +398,7 @@ bool tlvs_to_adj_mt_set(struct isis_tlvs *tlvs, bool v4_usable, bool v6_usable,
&& !tlvs->mt_router_info_empty) {
/* Other end does not have MT enabled */
if (mt_settings[i]->mtid == ISIS_MT_IPV4_UNICAST
&& v4_usable)
&& (v4_usable || v6_usable))
adj_mt_set(adj, intersect_count++,
ISIS_MT_IPV4_UNICAST);
} else {