diff --git a/contrib/src/pjproject/0019-ignore-down-interfaces.patch b/contrib/src/pjproject/0019-ignore-down-interfaces.patch
new file mode 100644
index 0000000000000000000000000000000000000000..3216402ea1ad465096092ddd3bea2474251981f7
--- /dev/null
+++ b/contrib/src/pjproject/0019-ignore-down-interfaces.patch
@@ -0,0 +1,40 @@
+diff --git a/pjlib/src/pj/ip_helper_generic.c b/pjlib/src/pj/ip_helper_generic.c
+index d7bbf725e..2a392d16b 100644
+--- a/pjlib/src/pj/ip_helper_generic.c
++++ b/pjlib/src/pj/ip_helper_generic.c
+@@ -97,6 +97,11 @@ static pj_status_t if_enum_by_af(int af,
+ 	    continue; /* Skip when interface is down */
+ 	}
+ 
++	if ((it->ifa_flags & IFF_RUNNING)==0) {
++	    TRACE_((THIS_FILE, "  interface is not running"));
++	    continue; /* Skip when interface is not running */
++	}
++
+ #if PJ_IP_HELPER_IGNORE_LOOPBACK_IF
+ 	if (it->ifa_flags & IFF_LOOPBACK) {
+ 	    TRACE_((THIS_FILE, "  loopback interface"));
+@@ -208,6 +213,11 @@ static pj_status_t if_enum_by_af(int af,
+ 	    continue; /* Skip when interface is down */
+ 	}
+ 
++	if ((iff.ifr_flags & IFF_RUNNING)==0) {
++	    TRACE_((THIS_FILE, "  interface is not running"));
++	    continue; /* Skip when interface is not running */
++	}
++
+ #if PJ_IP_HELPER_IGNORE_LOOPBACK_IF
+ 	if (iff.ifr_flags & IFF_LOOPBACK) {
+ 	    TRACE_((THIS_FILE, "  loopback interface"));
+@@ -286,6 +296,11 @@ static pj_status_t if_enum_by_af(int af, unsigned *p_cnt, pj_sockaddr ifs[])
+ 	    continue; /* Skip when interface is down */
+ 	}
+ 
++        if ((ifreq.ifr_flags & IFF_RUNNING)==0) {
++	    TRACE_((THIS_FILE, "  interface is not running"));
++	    continue; /* Skip when interface is not running */
++	}
++
+ #if PJ_IP_HELPER_IGNORE_LOOPBACK_IF
+ 	if (ifreq.ifr_flags & IFF_LOOPBACK) {
+ 	    TRACE_((THIS_FILE, "  loopback interface"));
diff --git a/contrib/src/pjproject/rules.mak b/contrib/src/pjproject/rules.mak
index 330f9c410e8a07c2237358f5be993d183b2b40ec..b1c273450d0e65521661b85ac5d39800ed5bac6c 100644
--- a/contrib/src/pjproject/rules.mak
+++ b/contrib/src/pjproject/rules.mak
@@ -63,6 +63,7 @@ pjproject: pjproject-$(PJPROJECT_VERSION).tar.gz .sum-pjproject
 	$(APPLY) $(SRC)/pjproject/0016-use-addrinfo-instead-CFHOST.patch
 	$(APPLY) $(SRC)/pjproject/0017-CVE-2020-15260.patch
 	$(APPLY) $(SRC)/pjproject/0018-CVE-2021-21375.patch
+	$(APPLY) $(SRC)/pjproject/0019-ignore-down-interfaces.patch
 ifdef HAVE_ANDROID
 	$(APPLY) $(SRC)/pjproject/0001-android.patch
 endif