diff --git a/contrib/src/pjproject/0020-ignore-addresses-for-RFC7335.patch b/contrib/src/pjproject/0020-ignore-addresses-for-RFC7335.patch
new file mode 100644
index 0000000000000000000000000000000000000000..8f0d5d88a6682c592038f408ae05d24265325822
--- /dev/null
+++ b/contrib/src/pjproject/0020-ignore-addresses-for-RFC7335.patch
@@ -0,0 +1,55 @@
+diff --git a/pjlib/src/pj/ip_helper_generic.c b/pjlib/src/pj/ip_helper_generic.c
+index d7bbf725e..3d64146df 100644
+--- a/pjlib/src/pj/ip_helper_generic.c
++++ b/pjlib/src/pj/ip_helper_generic.c
+@@ -116,6 +116,16 @@ static pj_status_t if_enum_by_af(int af,
+ 	    continue; /* Skip when interface is down */
+ 	}
+ 
++	/* Ignore 192.0.0.0/29 address. cf https://datatracker.ietf.org/doc/html/rfc7335#section-4
++	 */
++	if (af==pj_AF_INET() &&
++	    (pj_ntohl(((pj_sockaddr_in*)ad)->sin_addr.s_addr) >> 4) == 201326592 /* 0b1100000000000000000000000000 which is 192.0.0.0 >> 4 */)
++	{
++	    TRACE_((THIS_FILE, "  address %s ignored (192.0.0.0/29 class)",
++		    get_addr(ad), ad->sa_family));
++	    continue;
++	}
++
+ 	/* Ignore 0.0.0.0/8 address. This is a special address
+ 	 * which doesn't seem to have practical use.
+ 	 */
+@@ -215,6 +225,16 @@ static pj_status_t if_enum_by_af(int af,
+ 	}
+ #endif
+ 
++	/* Ignore 192.0.0.0/29 address. cf https://datatracker.ietf.org/doc/html/rfc7335#section-4
++	 */
++	if (af==pj_AF_INET() &&
++	    (pj_ntohl(((pj_sockaddr_in*)ad)->sin_addr.s_addr) >> 4) == 201326592 /* 0b1100000000000000000000000000 which is 192.0.0.0 >> 4 */)
++	{
++	    TRACE_((THIS_FILE, "  address %s ignored (192.0.0.0/29 class)",
++		    get_addr(ad), ad->sa_family));
++	    continue;
++	}
++
+ 	/* Ignore 0.0.0.0/8 address. This is a special address
+ 	 * which doesn't seem to have practical use.
+ 	 */
+@@ -309,6 +329,16 @@ static pj_status_t if_enum_by_af(int af, unsigned *p_cnt, pj_sockaddr ifs[])
+ 	    continue;	/* Not address family that we want, continue */
+ 	}
+ 
++	/* Ignore 192.0.0.0/29 address. cf https://datatracker.ietf.org/doc/html/rfc7335#section-4
++	 */
++	if (af==pj_AF_INET() &&
++	    (pj_ntohl(((pj_sockaddr_in*)ad)->sin_addr.s_addr) >> 4) == 201326592 /* 0b1100000000000000000000000000 which is 192.0.0.0 >> 4 */)
++	{
++	    TRACE_((THIS_FILE, "  address %s ignored (192.0.0.0/29 class)",
++		    get_addr(ad), ad->sa_family));
++	    continue;
++	}
++
+ 	/* Ignore 0.0.0.0/8 address. This is a special address
+ 	 * which doesn't seem to have practical use.
+ 	 */
diff --git a/contrib/src/pjproject/package.json b/contrib/src/pjproject/package.json
index fe6585f405300c7af1194693a26975a4811a8aaf..5595550948e8aa4f1474140a0ed59388ef5fd4be 100644
--- a/contrib/src/pjproject/package.json
+++ b/contrib/src/pjproject/package.json
@@ -21,6 +21,8 @@
         "0016-use-addrinfo-instead-CFHOST.patch",
         "0017-CVE-2020-15260.patch",
         "0018-CVE-2021-21375.patch",
+        "0019-ignore-down-interfaces.patch",
+        "0020-ignore-addresses-for-RFC7335.patch",
         "0001-win-config.patch",
         "0002-win-vs-gnutls.patch",
         "0003-win-vs2017-props.patch"
diff --git a/contrib/src/pjproject/rules.mak b/contrib/src/pjproject/rules.mak
index b1c273450d0e65521661b85ac5d39800ed5bac6c..7b2aa213ceb977c067d6826e4e7725d2ee5976e8 100644
--- a/contrib/src/pjproject/rules.mak
+++ b/contrib/src/pjproject/rules.mak
@@ -64,6 +64,7 @@ pjproject: pjproject-$(PJPROJECT_VERSION).tar.gz .sum-pjproject
 	$(APPLY) $(SRC)/pjproject/0017-CVE-2020-15260.patch
 	$(APPLY) $(SRC)/pjproject/0018-CVE-2021-21375.patch
 	$(APPLY) $(SRC)/pjproject/0019-ignore-down-interfaces.patch
+	$(APPLY) $(SRC)/pjproject/0020-ignore-addresses-for-RFC7335.patch
 ifdef HAVE_ANDROID
 	$(APPLY) $(SRC)/pjproject/0001-android.patch
 endif