diff --git a/1019-device-dont-disable-IPv6-in-stage3-on-reapply-91479.patch b/1019-device-dont-disable-IPv6-in-stage3-on-reapply-91479.patch
new file mode 100644
index 0000000..f4ada43
--- /dev/null
+++ b/1019-device-dont-disable-IPv6-in-stage3-on-reapply-91479.patch
@@ -0,0 +1,28 @@
+From a86f9ba92ed580bb054d3364ed423130475cb344 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Vladim=C3=ADr=20Bene=C5=A1?= <vbenes@redhat.com>
+Date: Fri, 15 Aug 2025 12:22:39 +0200
+Subject: [PATCH] device: don't disable IPv6 in stage3 on reapply
+
+Slightly modified backport of:
+https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2232
+---
+ src/core/devices/nm-device.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/core/devices/nm-device.c b/src/core/devices/nm-device.c
+index 10b5d929fb..6b654d6d60 100644
+--- a/src/core/devices/nm-device.c
++++ b/src/core/devices/nm-device.c
+@@ -12204,7 +12204,8 @@ activate_stage3_ip_config(NMDevice *self)
+              * IPv6LL if this is not an assumed connection, since assumed connections
+              * will already have IPv6 set up.
+              */
+-            if (!nm_device_sys_iface_state_is_external_or_assume(self))
++            if ((priv->state <= NM_DEVICE_STATE_IP_CONFIG || priv->ip_data_6.do_reapply)
++                && !nm_device_sys_iface_state_is_external_or_assume(self))
+                 _dev_addrgenmode6_set(self, NM_IN6_ADDR_GEN_MODE_NONE);
+ 
+             /* Re-enable IPv6 on the interface */
+-- 
+2.50.1
+
diff --git a/NetworkManager.spec b/NetworkManager.spec
index 89f2c67..966fdb6 100644
--- a/NetworkManager.spec
+++ b/NetworkManager.spec
@@ -6,7 +6,7 @@
 %global epoch_version 1
 %global real_version 1.40.16
 %global rpm_version %{real_version}
-%global release_version 19
+%global release_version 20
 %global snapshot %{nil}
 %global git_sha %{nil}
 %global bcond_default_debug 0
@@ -214,6 +214,7 @@ Patch1015: 1015-use-etc-hosts-for-hostname-resolution-rhel-53200.patch
 Patch1016: 1016-vpn-place-gateway-route-to-table-defined-in-ipvx-route-table-rhel-73051.patch
 Patch1017: 1017-vpn-fix-routing-rules-support-in-vpn-conenctions-rhel-73052.patch
 Patch1018: 1018-cloud-setup-azure-ensure-that-primary-address-is-pla-rhel-69462.patch
+Patch1019: 1019-device-dont-disable-IPv6-in-stage3-on-reapply-91479.patch
 
 Requires(post): systemd
 %if 0%{?fedora} || 0%{?rhel} >= 8
@@ -1249,6 +1250,9 @@ fi
 
 
 %changelog
+* Fri Aug 15 2025 Vladimír Beneš <vbenes@redhat.com> - 1:1.40.16-20
+- device: don't disable IPv6 in stage3 on reapply (RHEL-91479)
+ 
 * Fri Jan 17 2025 Fernando Fernandez Mancera <ferfern@redhat.com> - 1:1.40.16-19
 - cloud-setup: azure: ensure that primary address is placed first (RHEL-69462)