diff --git a/srcpkgs/bird/patches/0001-Babel-Fix-bug-in-iface-reconfiguration.patch b/srcpkgs/bird/patches/0001-Babel-Fix-bug-in-iface-reconfiguration.patch
new file mode 100644
index 0000000000..bc809171e4
--- /dev/null
+++ b/srcpkgs/bird/patches/0001-Babel-Fix-bug-in-iface-reconfiguration.patch
@@ -0,0 +1,29 @@
+From fcb4dd0c831339c4374ace17d8f2ae6ebfeed279 Mon Sep 17 00:00:00 2001
+From: "Ondrej Zajicek (work)" <santiago@crfreenet.org>
+Date: Sun, 27 Feb 2022 03:10:38 +0100
+Subject: [PATCH] Babel: Fix bug in iface reconfiguration
+
+A recent change in Babel causes ifaces to disappear after
+reconfiguration. The patch fixes that.
+
+Thanks to Johannes Kimmel for an insightful bugreport.
+---
+ proto/babel/babel.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/proto/babel/babel.c b/proto/babel/babel.c
+index e43818f5..174fc9e2 100644
+--- a/proto/babel/babel.c
++++ b/proto/babel/babel.c
+@@ -1899,7 +1899,7 @@ babel_reconfigure_ifaces(struct babel_proto *p, struct babel_config *cf)
+     struct babel_iface *ifa = babel_find_iface(p, iface);
+     struct babel_iface_config *ic = (void *) iface_patt_find(&cf->iface_list, iface, NULL);
+ 
+-    if (ic && iface_is_valid(p, iface))
++    if (ic && !iface_is_valid(p, iface))
+       ic = NULL;
+ 
+     if (ifa && ic)
+-- 
+2.35.1
+
diff --git a/srcpkgs/bird/template b/srcpkgs/bird/template
index 224f4453f7..f2351acd72 100644
--- a/srcpkgs/bird/template
+++ b/srcpkgs/bird/template
@@ -1,7 +1,7 @@
 # Template file for 'bird'
 pkgname=bird
 version=2.0.9
-revision=1
+revision=2
 wrksrc=bird-v$version
 build_style=gnu-configure
 hostmakedepends="flex autoconf"