diff --git a/autofs-5.1.9-Fix-masks-in-parse_sub.c-so-that-hosts-are-correctly-matched.patch b/autofs-5.1.9-Fix-masks-in-parse_sub.c-so-that-hosts-are-correctly-matched.patch
new file mode 100644
index 0000000..2411fe7
--- /dev/null
+++ b/autofs-5.1.9-Fix-masks-in-parse_sub.c-so-that-hosts-are-correctly-matched.patch
@@ -0,0 +1,44 @@
+autofs-5.1.9 - Fix masks in parse_sub.c, so that hosts are correctly matched.
+
+From: Thiago Becker <tbecker@redhat.com>
+
+In the case local address is 10.x.x.x and one of the replica addresses
+is 138.x.x.x, MASK_A will make both equal, and get_priority will return
+PROXIMITY_NET, which is not correct.
+
+MASK_A = 0x7F000000 = 01111111 00000000 00000000 00000000
+LOCAL  = 10.x.x.x   = 00001010 00000000 00000000 00000000
+REMOTE = 138.x.x.x  = 10001010 00000000 00000000 00000000
+
+Signed-off-by: Thiago Becker <tbecker@redhat.com>
+Signed-off-by: Ian Kent <raven@themaw.net>
+---
+ CHANGELOG        |    1 +
+ lib/parse_subs.c |    6 +++---
+ 2 files changed, 4 insertions(+), 3 deletions(-)
+
+--- autofs-5.1.7.orig/CHANGELOG
++++ autofs-5.1.7/CHANGELOG
+@@ -199,6 +199,7 @@
+ - improve handling of missing map entry for mount request.
+ - fix incorrect flags update in update_with_defaults().
+ - skip expire check for amd nounmount mounts.
++- Fix masks in parse_sub.c, so that hosts are correctly matched.
+ 
+ 25/01/2021 autofs-5.1.7
+ - make bind mounts propagation slave by default.
+--- autofs-5.1.7.orig/lib/parse_subs.c
++++ autofs-5.1.7/lib/parse_subs.c
+@@ -37,9 +37,9 @@
+ static int volatile ifc_buf_len = MAX_IFC_BUF;
+ static int volatile ifc_last_len = 0;
+ 
+-#define MASK_A  0x7F000000
+-#define MASK_B  0xBFFF0000
+-#define MASK_C  0xDFFFFF00
++#define MASK_A  0xFF000000
++#define MASK_B  0xFFFF0000
++#define MASK_C  0xFFFFFF00
+ 
+ /* Get numeric value of the n bits starting at position p */
+ #define getbits(x, p, n)	((x >> (p + 1 - n)) & ~(~0 << n))
diff --git a/autofs.spec b/autofs.spec
index ee21071..bf05abe 100644
--- a/autofs.spec
+++ b/autofs.spec
@@ -12,7 +12,7 @@
 Summary: A tool for automatically mounting and unmounting filesystems
 Name: autofs
 Version: 5.1.7
-Release: 67%{?dist}
+Release: 68%{?dist}
 Epoch: 1
 License: GPLv2+
 Source: https://www.kernel.org/pub/linux/daemons/autofs/v5/autofs-%{version}-2.tar.gz
@@ -250,6 +250,9 @@ Patch224: autofs-5.1.9-improve-handling-of-missing-map-entry-for-mount-request.p
 Patch225: autofs-5.1.9-fix-incorrect-flags-update-in-update_with_defaults.patch
 Patch226: autofs-5.1.9-skip-expire-check-for-amd-nounmount-mounts.patch
 
+# JIRA: RHEL-157745
+Patch227: autofs-5.1.9-Fix-masks-in-parse_sub.c-so-that-hosts-are-correctly-matched.patch
+
 %if %{with_systemd}
 BuildRequires: systemd-units
 BuildRequires: systemd-devel
@@ -528,6 +531,8 @@ echo %{version}-%{release} > .version
 %patch -P 225 -p1
 %patch -P 226 -p1
 
+%patch -P 227 -p1
+
 %build
 LDFLAGS=-Wl,-z,now
 %configure \
@@ -635,6 +640,11 @@ fi
 %dir /etc/auto.master.d
 
 %changelog
+* Fri Mar 20 2026 Ian Kent <ikent@redhat.com> - 1:5.1.7-68
+- RHEL-157745 - get_proximity returns a worng proximity on specific addresses
+  - Fix masks in parse_sub.c, so that hosts are correctly matched.
+- Resolves: RHEL-157745
+
 * Wed Mar 09 2026 Ian Kent <ikent@redhat.com> - 1:5.1.7-67
 - RHEL-150237 - RFE: autofs: add handling for AMD 'nounmount' option [rhel-9]
   - fix incorrect flags update in update_with_defaults().