net-misc/bird: Fix handling of transitive extended communities

Package-Manager: Portage-2.3.99, Repoman-2.3.22
Signed-off-by: Alarig Le Lay <alarig@swordarmor.fr>

net-misc/bird/bird-2.0.7-r1.ebuild

@@ -29,6 +29,7 @@ DEPEND="sys-devel/flex
 
 PATCHES=(
 	"${FILESDIR}/${P}-ipv6-rpki.patch"
+	"${FILESDIR}/${P}-attrs.c.patch"
 )
 
 src_configure() {

net-misc/bird/files/bird-2.0.7-attrs.c.patch

@@ -0,0 +1,33 @@
+diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
+index b8921363..9a4e12d2 100644
+--- a/proto/bgp/attrs.c
++++ b/proto/bgp/attrs.c
+@@ -717,13 +717,23 @@ bgp_decode_mp_unreach_nlri(struct bgp_parse_state *s, uint code UNUSED, uint fla
+ static void
+ bgp_export_ext_community(struct bgp_export_state *s, eattr *a)
+ {
+-  struct adata *ad = ec_set_del_nontrans(s->pool, a->u.ptr);
++  if (!s->proto->is_interior)
++  {
++    struct adata *ad = ec_set_del_nontrans(s->pool, a->u.ptr);
+ 
+-  if (ad->length == 0)
+-    UNSET(a);
++    if (ad->length == 0)
++      UNSET(a);
+ 
+-  ec_set_sort_x(ad);
+-  a->u.ptr = ad;
++    ec_set_sort_x(ad);
++    a->u.ptr = ad;
++  }
++  else
++  {
++    if (a->u.ptr->length == 0)
++      UNSET(a);
++
++    a->u.ptr = ec_set_sort(s->pool, a->u.ptr);
++  }
+ }
+ 
+ static void