diff --git a/MANIFEST b/MANIFEST
index 7657fe8ab..607155418 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -102,12 +102,14 @@ include/sudo_rand.h
 include/sudo_util.h
 install-sh
 lib/iolog/Makefile.in
+lib/iolog/host_port.c
 lib/iolog/hostcheck.c
 lib/iolog/iolog_fileio.c
 lib/iolog/iolog_json.c
 lib/iolog/iolog_json.h
 lib/iolog/iolog_path.c
 lib/iolog/iolog_util.c
+lib/iolog/regress/host_port/host_port_test.c  
 lib/iolog/regress/iolog_json/check_iolog_json.c
 lib/iolog/regress/iolog_json/test1.in
 lib/iolog/regress/iolog_json/test2.in
@@ -150,7 +152,6 @@ lib/util/gettime.c
 lib/util/getusershell.c
 lib/util/gidlist.c
 lib/util/glob.c
-lib/util/host_port.c
 lib/util/inet_ntop.c
 lib/util/inet_pton.c
 lib/util/isblank.c
@@ -182,7 +183,6 @@ lib/util/regress/getgrouplist/getgrouplist_test.c
 lib/util/regress/glob/files
 lib/util/regress/glob/globtest.c
 lib/util/regress/glob/globtest.in
-lib/util/regress/host_port/host_port_test.c  
 lib/util/regress/mktemp/mktemp_test.c
 lib/util/regress/parse_gids/parse_gids_test.c
 lib/util/regress/progname/progname_test.c
diff --git a/include/sudo_iolog.h b/include/sudo_iolog.h
index 661308d35..4d56cda4b 100644
--- a/include/sudo_iolog.h
+++ b/include/sudo_iolog.h
@@ -107,6 +107,9 @@ struct iolog_path_escape {
     size_t (*copy_fn)(char *, size_t, void *);
 };
 
+/* host_port.c */
+bool iolog_parse_host_port(char *str, char **hostp, char **portp, bool *tlsp, char *defport, char *defport_tls);
+
 /* iolog_path.c */
 bool expand_iolog_path(const char *inpath, char *path, size_t pathlen, const struct iolog_path_escape *escapes, void *closure);
 
diff --git a/include/sudo_util.h b/include/sudo_util.h
index bf33cec61..a60ba9003 100644
--- a/include/sudo_util.h
+++ b/include/sudo_util.h
@@ -207,10 +207,6 @@ __dso_public int sudo_parse_gids_v1(const char *gidstr, const gid_t *basegid, GE
 __dso_public int sudo_getgrouplist2_v1(const char *name, gid_t basegid, GETGROUPS_T **groupsp, int *ngroupsp);
 #define sudo_getgrouplist2(_a, _b, _c, _d) sudo_getgrouplist2_v1((_a), (_b), (_c), (_d))
 
-/* host_port.c */
-__dso_public bool sudo_parse_host_port_v1(char *str, char **hostp, char **portp, bool *tlsp, char *defport, char *defport_tls);
-#define sudo_parse_host_port(_a, _b, _c, _d, _e, _f) sudo_parse_host_port_v1((_a), (_b), (_c), (_d), (_e), (_f))
-
 /* key_val.c */
 __dso_public char *sudo_new_key_val_v1(const char *key, const char *value);
 #define sudo_new_key_val(_a, _b) sudo_new_key_val_v1((_a), (_b))
diff --git a/lib/iolog/Makefile.in b/lib/iolog/Makefile.in
index 105332020..e7cd14711 100644
--- a/lib/iolog/Makefile.in
+++ b/lib/iolog/Makefile.in
@@ -75,7 +75,7 @@ PVS_IGNORE = 'V707,V011,V002,V536'
 PVS_LOG_OPTS = -a 'GA:1,2' -e -t errorfile -d $(PVS_IGNORE)
 
 # Regression tests
-TEST_PROGS = check_iolog_json check_iolog_path check_iolog_util
+TEST_PROGS = check_iolog_json check_iolog_path check_iolog_util host_port_test
 TEST_LIBS = @LIBS@
 TEST_LDFLAGS = @LDFLAGS@
 
@@ -87,7 +87,7 @@ DEVEL = @DEVEL@
 SHELL = @SHELL@
 
 LIBIOLOG_OBJS = iolog_fileio.lo iolog_json.lo iolog_path.lo iolog_util.lo \
-		hostcheck.lo
+		host_port.lo hostcheck.lo
 
 IOBJS = $(LIBIOLOG_OBJS:.lo=.i)
 
@@ -99,6 +99,8 @@ CHECK_IOLOG_UTIL_OBJS = check_iolog_util.lo iolog_json.lo iolog_util.lo
 
 CHECK_IOLOG_JSON_OBJS = check_iolog_json.lo iolog_json.lo
 
+HOST_PORT_TEST_OBJS = host_port_test.lo host_port.lo
+
 all: libsudo_iolog.la
 
 pvs-log-files: $(POBJS)
@@ -137,6 +139,9 @@ check_iolog_util: $(CHECK_IOLOG_UTIL_OBJS) libsudo_iolog.la
 check_iolog_json: $(CHECK_IOLOG_JSON_OBJS) libsudo_iolog.la
 	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(CHECK_IOLOG_JSON_OBJS) libsudo_iolog.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(SSP_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
 
+host_port_test: $(HOST_PORT_TEST_OBJS) libsudo_iolog.la
+	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(HOST_PORT_TEST_OBJS) libsudo_iolog.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(SSP_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
+
 pre-install:
 
 install:
@@ -167,6 +172,7 @@ check: $(TEST_PROGS)
 	    ./check_iolog_json $(srcdir)/regress/iolog_json/*.in || rval=`expr $$rval + $$?`; \
 	    ./check_iolog_path $(srcdir)/regress/iolog_path/data || rval=`expr $$rval + $$?`; \
 	    ./check_iolog_util || rval=`expr $$rval + $$?`; \
+	    ./host_port_test || rval=`expr $$rval + $$?`; \
 	    exit $$rval; \
 	fi
 
@@ -226,6 +232,30 @@ check_iolog_util.i: $(srcdir)/regress/iolog_util/check_iolog_util.c \
 	$(CC) -E -o $@ $(CPPFLAGS) $<
 check_iolog_util.plog: check_iolog_util.i
 	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/iolog_util/check_iolog_util.c --i-file $< --output-file $@
+host_port.lo: $(srcdir)/host_port.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_gettext.h $(incdir)/sudo_queue.h \
+              $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(SSP_CFLAGS) $(srcdir)/host_port.c
+host_port.i: $(srcdir)/host_port.c $(incdir)/compat/stdbool.h \
+              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
+              $(incdir)/sudo_gettext.h $(incdir)/sudo_queue.h \
+              $(incdir)/sudo_util.h $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+host_port.plog: host_port.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/host_port.c --i-file $< --output-file $@
+host_port_test.lo: $(srcdir)/regress/host_port/host_port_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_util.h \
+                   $(top_builddir)/config.h
+	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(SSP_CFLAGS) $(srcdir)/regress/host_port/host_port_test.c
+host_port_test.i: $(srcdir)/regress/host_port/host_port_test.c \
+                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
+                   $(incdir)/sudo_fatal.h $(incdir)/sudo_util.h \
+                   $(top_builddir)/config.h
+	$(CC) -E -o $@ $(CPPFLAGS) $<
+host_port_test.plog: host_port_test.i
+	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/host_port/host_port_test.c --i-file $< --output-file $@
 hostcheck.lo: $(srcdir)/hostcheck.c $(incdir)/compat/stdbool.h \
               $(incdir)/hostcheck.h $(incdir)/sudo_compat.h \
               $(incdir)/sudo_debug.h $(incdir)/sudo_queue.h \
diff --git a/lib/util/host_port.c b/lib/iolog/host_port.c
similarity index 95%
rename from lib/util/host_port.c
rename to lib/iolog/host_port.c
index b8415e6cb..882f174f8 100644
--- a/lib/util/host_port.c
+++ b/lib/iolog/host_port.c
@@ -41,13 +41,13 @@
  * Fills in hostp and portp which may point within str, which is modified.
  */
 bool
-sudo_parse_host_port_v1(char *str, char **hostp, char **portp, bool *tlsp,
+iolog_parse_host_port(char *str, char **hostp, char **portp, bool *tlsp,
      char *defport, char *defport_tls)
 {
     char *flags, *port, *host = str;
     bool ret = false;
     bool tls = false;
-    debug_decl(sudo_parse_host_port, SUDO_DEBUG_UTIL);
+    debug_decl(iolog_parse_host_port, SUDO_DEBUG_UTIL);
 
     /* Check for IPv6 address like [::0] followed by optional port */
     if (*host == '[') {
diff --git a/lib/util/regress/host_port/host_port_test.c b/lib/iolog/regress/host_port/host_port_test.c
similarity index 96%
rename from lib/util/regress/host_port/host_port_test.c
rename to lib/iolog/regress/host_port/host_port_test.c
index 3454c8025..fdf4f00a0 100644
--- a/lib/util/regress/host_port/host_port_test.c
+++ b/lib/iolog/regress/host_port/host_port_test.c
@@ -32,15 +32,18 @@
 #else
 # include "compat/stdbool.h"
 #endif
+#include <time.h>
+#include <unistd.h>
 
 #include "sudo_compat.h"
 #include "sudo_fatal.h"
+#include "sudo_iolog.h"
 #include "sudo_util.h"
 
 __dso_public int main(int argc, char *argv[]);
 
 /*
- * Test that sudo_parse_host_port() works as expected.
+ * Test that iolog_parse_host_port() works as expected.
  */
 
 struct host_port_test {
@@ -95,7 +98,7 @@ main(int argc, char *argv[])
 	    sudo_fatal_nodebug(NULL);
 
 	ntests++;
-	ret = sudo_parse_host_port(copy, &host, &port, &tls,
+	ret = iolog_parse_host_port(copy, &host, &port, &tls,
 	    test_data[i].defport, test_data[i].defport_tls);
 	if (ret != test_data[i].ret) {
 	    sudo_warnx_nodebug("test #%d: %s: returned %s, expected %s",
diff --git a/lib/util/Makefile.in b/lib/util/Makefile.in
index 21005dcd8..9c04fa0a1 100644
--- a/lib/util/Makefile.in
+++ b/lib/util/Makefile.in
@@ -104,7 +104,7 @@ PVS_LOG_OPTS = -a 'GA:1,2' -e -t errorfile -d $(PVS_IGNORE)
 # Regression tests
 TEST_PROGS = conf_test hltq_test parseln_test progname_test strsplit_test \
 	     strtobool_test strtoid_test strtomode_test strtonum_test \
-	     parse_gids_test getgrouplist_test host_port_test @COMPAT_TEST_PROGS@
+	     parse_gids_test getgrouplist_test @COMPAT_TEST_PROGS@
 TEST_LIBS = @LIBS@
 TEST_LDFLAGS = @LDFLAGS@
 
@@ -120,7 +120,7 @@ DEVEL = @DEVEL@
 SHELL = @SHELL@
 
 LTOBJS = @DIGEST@ event.lo fatal.lo key_val.lo gethostname.lo gettime.lo \
-	 getgrouplist.lo gidlist.lo host_port.lo json.lo lbuf.lo locking.lo \
+	 getgrouplist.lo gidlist.lo json.lo lbuf.lo locking.lo \
          logfac.lo logpri.lo mkdir_parents.lo parseln.lo progname.lo \
          roundup.lo secure_path.lo setgroups.lo strsplit.lo strtobool.lo \
          strtoid.lo strtomode.lo strtonum.lo sudo_conf.lo \
@@ -161,8 +161,6 @@ PARSE_GIDS_TEST_OBJS = parse_gids_test.lo gidlist.lo
 
 GETGROUPLIST_TEST_OBJS = getgrouplist_test.lo getgrouplist.lo
 
-HOST_PORT_TEST_OBJS = host_port_test.lo host_port.lo
-
 STRSIG_TEST_OBJS = strsig_test.lo sig2str.lo str2sig.lo @SIGNAME@
 
 VSYSLOG_TEST_OBJS = vsyslog_test.lo vsyslog.lo
@@ -259,9 +257,6 @@ parse_gids_test: $(PARSE_GIDS_TEST_OBJS) libsudo_util.la
 getgrouplist_test: $(GETGROUPLIST_TEST_OBJS) libsudo_util.la
 	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(GETGROUPLIST_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(SSP_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
 
-host_port_test: $(HOST_PORT_TEST_OBJS) libsudo_util.la
-	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(HOST_PORT_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(SSP_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
-
 strsplit_test: $(STRSPLIT_TEST_OBJS) libsudo_util.la
 	$(LIBTOOL) $(LTFLAGS) --mode=link $(CC) -o $@ $(STRSPLIT_TEST_OBJS) libsudo_util.la $(ASAN_LDFLAGS) $(PIE_LDFLAGS) $(SSP_LDFLAGS) $(TEST_LDFLAGS) $(TEST_LIBS)
 
@@ -351,7 +346,6 @@ check: $(TEST_PROGS)
 		./strsig_test || rval=`expr $$rval + $$?`; \
 	    fi; \
 	    ./getgrouplist_test || rval=`expr $$rval + $$?`; \
-	    ./host_port_test || rval=`expr $$rval + $$?`; \
 	    ./strtobool_test || rval=`expr $$rval + $$?`; \
 	    ./strtoid_test || rval=`expr $$rval + $$?`; \
 	    ./strtomode_test || rval=`expr $$rval + $$?`; \
@@ -766,30 +760,6 @@ hltq_test.i: $(srcdir)/regress/tailq/hltq_test.c $(incdir)/compat/stdbool.h \
 	$(CC) -E -o $@ $(CPPFLAGS) $<
 hltq_test.plog: hltq_test.i
 	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/tailq/hltq_test.c --i-file $< --output-file $@
-host_port.lo: $(srcdir)/host_port.c $(incdir)/compat/stdbool.h \
-              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
-              $(incdir)/sudo_gettext.h $(incdir)/sudo_queue.h \
-              $(incdir)/sudo_util.h $(top_builddir)/config.h
-	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(SSP_CFLAGS) $(srcdir)/host_port.c
-host_port.i: $(srcdir)/host_port.c $(incdir)/compat/stdbool.h \
-              $(incdir)/sudo_compat.h $(incdir)/sudo_debug.h \
-              $(incdir)/sudo_gettext.h $(incdir)/sudo_queue.h \
-              $(incdir)/sudo_util.h $(top_builddir)/config.h
-	$(CC) -E -o $@ $(CPPFLAGS) $<
-host_port.plog: host_port.i
-	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/host_port.c --i-file $< --output-file $@
-host_port_test.lo: $(srcdir)/regress/host_port/host_port_test.c \
-                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
-                   $(incdir)/sudo_fatal.h $(incdir)/sudo_util.h \
-                   $(top_builddir)/config.h
-	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(SSP_CFLAGS) $(srcdir)/regress/host_port/host_port_test.c
-host_port_test.i: $(srcdir)/regress/host_port/host_port_test.c \
-                   $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
-                   $(incdir)/sudo_fatal.h $(incdir)/sudo_util.h \
-                   $(top_builddir)/config.h
-	$(CC) -E -o $@ $(CPPFLAGS) $<
-host_port_test.plog: host_port_test.i
-	rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/regress/host_port/host_port_test.c --i-file $< --output-file $@
 inet_pton.lo: $(srcdir)/inet_pton.c $(incdir)/sudo_compat.h \
               $(top_builddir)/config.h
 	$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c -o $@ $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(SSP_CFLAGS) $(srcdir)/inet_pton.c
diff --git a/lib/util/util.exp.in b/lib/util/util.exp.in
index ad855a802..6095623fd 100644
--- a/lib/util/util.exp.in
+++ b/lib/util/util.exp.in
@@ -108,7 +108,6 @@ sudo_logpri2str_v1
 sudo_mkdir_parents_v1
 sudo_new_key_val_v1
 sudo_parse_gids_v1
-sudo_parse_host_port_v1
 sudo_parseln_v1
 sudo_parseln_v2
 sudo_pow2_roundup_v1
diff --git a/logsrvd/logsrvd_conf.c b/logsrvd/logsrvd_conf.c
index a812c90c8..0cd5b734f 100644
--- a/logsrvd/logsrvd_conf.c
+++ b/logsrvd/logsrvd_conf.c
@@ -382,7 +382,7 @@ cb_listen_address(struct logsrvd_config *config, const char *str)
     }
 
     /* Parse host[:port] */
-    if (!sudo_parse_host_port(copy, &host, &port, &tls, DEFAULT_PORT,
+    if (!iolog_parse_host_port(copy, &host, &port, &tls, DEFAULT_PORT,
 	    DEFAULT_PORT_TLS))
 	goto done;
     if (host[0] == '*' && host[1] == '\0')
diff --git a/plugins/sudoers/iolog_client.c b/plugins/sudoers/iolog_client.c
index 31abf52b6..23100fa9d 100644
--- a/plugins/sudoers/iolog_client.c
+++ b/plugins/sudoers/iolog_client.c
@@ -60,6 +60,7 @@
 
 #include "sudoers.h"
 #include "sudo_event.h"
+#include "sudo_iolog.h"
 #include "iolog_plugin.h"
 #include "hostcheck.h"
 
@@ -549,7 +550,7 @@ log_server_connect(struct client_closure *closure)
     STAILQ_FOREACH(server, closure->log_details->log_servers, entries) {
         free(copy);
 	copy = strdup(server->str);
-	if (!sudo_parse_host_port(copy, &host, &port, &tls, DEFAULT_PORT,
+	if (!iolog_parse_host_port(copy, &host, &port, &tls, DEFAULT_PORT,
 		DEFAULT_PORT_TLS)) {
             sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
                 "unable to parse %s", copy);