diff --git a/net-mgmt/ipgen/Makefile b/net-mgmt/ipgen/Makefile
index e2e33b19c453..9d88aea513e9 100644
--- a/net-mgmt/ipgen/Makefile
+++ b/net-mgmt/ipgen/Makefile
@@ -1,33 +1,32 @@
 PORTNAME=	ipgen
-PORTVERSION=	1.30.20240527
-PORTREVISION=	1
+PORTVERSION=	1.31.20250410
 CATEGORIES=	net-mgmt
 
 MAINTAINER=	hrs@FreeBSD.org
 COMMENT=	Interactive Packet Generator and Benchmarking Utility
 WWW=		https://github.com/iij/ipgen
 
 LICENSE=	BSD2CLAUSE
 
 LIB_DEPENDS=	libevent.so:devel/libevent
 
 USES=		gmake perl5 shebangfix
 USE_GITHUB=	yes
 GH_ACCOUNT=	iij
-GH_TAGNAME=	9e649f4
+GH_TAGNAME=	121ac92
 
 SHEBANG_FILES=	gen/layout_generator
 MAKEFILE=	GNUmakefile
 PORTDOCS=	README.md
 
 OPTIONS_DEFINE=	DOCS
 OPTIONS_DEFAULT=DOCS
 
 pre-build:
 	cd ${WRKSRC} && ${SETENV} ${MAKE_ENV} ${GMAKE} -f ${MAKEFILE} depend
 pre-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 post-install-DOCS-on:
 	cd ${WRKSRC} && ${INSTALL_DATA} ${PORTDOCS} ${STAGEDIR}${DOCSDIR}
 
 .include <bsd.port.mk>
diff --git a/net-mgmt/ipgen/distinfo b/net-mgmt/ipgen/distinfo
index a53baadb7b0d..fa65bba9c467 100644
--- a/net-mgmt/ipgen/distinfo
+++ b/net-mgmt/ipgen/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1731024085
-SHA256 (iij-ipgen-1.30.20240527-9e649f4_GH0.tar.gz) = 03303932fca65a9073b6372c0133e9958f26c0a44fa192846fea2019076e5aa6
-SIZE (iij-ipgen-1.30.20240527-9e649f4_GH0.tar.gz) = 267985
+TIMESTAMP = 1782505502
+SHA256 (iij-ipgen-1.31.20250410-121ac92_GH0.tar.gz) = 458c122e89fa0f9420fca33db410bab5937c384ca7c896120e3ae5fff6877854
+SIZE (iij-ipgen-1.31.20250410-121ac92_GH0.tar.gz) = 268257
diff --git a/net-mgmt/ipgen/files/patch-Makefile.inc b/net-mgmt/ipgen/files/patch-Makefile.inc
deleted file mode 100644
index b6942a9ff93f..000000000000
--- a/net-mgmt/ipgen/files/patch-Makefile.inc
+++ /dev/null
@@ -1,13 +0,0 @@
---- Makefile.inc.orig	2024-05-27 06:59:46 UTC
-+++ Makefile.inc
-@@ -1,3 +1,10 @@ MANDIR?=	${PREFIX}/share/man
- PREFIX?=	/usr/local
- LOCALBASE?=	${PREFIX}
- MANDIR?=	${PREFIX}/share/man
-+
-+BSD_INSTALL_CMD?=	install -o root -g wheel
-+BSD_INSTALL_PROGRAM?=	${BSD_INSTALL_CMD} -m 555
-+BSD_INSTALL_MAN?=	${BSD_INSTALL_CMD} -m 444
-+BSD_INSTALL_SCRIPT?=	${BSD_INSTALL_CMD} -m 444
-+BSD_INSTALL_DATA?=	${BSD_INSTALL_CMD} -m 444
-+BSD_INSTALL_DIR?=	${BSD_INSTALL_CMD} -d -m 755
diff --git a/net-mgmt/ipgen/files/patch-gen-GNUmakefile b/net-mgmt/ipgen/files/patch-gen-GNUmakefile
index 8d4fac3c53e6..b4d577e19505 100644
--- a/net-mgmt/ipgen/files/patch-gen-GNUmakefile
+++ b/net-mgmt/ipgen/files/patch-gen-GNUmakefile
@@ -1,15 +1,18 @@
---- gen/GNUmakefile.orig	2024-05-27 06:59:46 UTC
+--- gen/GNUmakefile.orig	2025-04-11 02:11:10 UTC
 +++ gen/GNUmakefile
-@@ -46,9 +46,9 @@ install:
- 	rm -f .depend GPATH GRTAGS GSYMS GTAGS
+@@ -1,6 +1,6 @@ include ../Makefile.inc
+ include ../Makefile.inc
+ 
+-PROG=		ipgen webserv
++PROG=		ipgen
+ SRCS=		gen.c util.c webserv.c pbuf.c sequencecheck.c seqtable.c item.c genscript.c flowparse.c pktgen_item.c
+ CFLAGS+=	-I.. -I${LOCALBASE}/include -g -DHTDOCS=\"${PREFIX}/share/ipgen/htdocs\"
+ CFLAGS+=	-Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith
+@@ -47,7 +47,6 @@ install:
  
  install:
--	install -o root -g wheel -m 550 ipgen ${DESTDIR}${PREFIX}/bin/
--	install -o root -g wheel -m 755 -d ${DESTDIR}${MANDIR}/man1
--	install -o root -g wheel -m 444 ipgen.1 ${DESTDIR}${MANDIR}/man1
-+	${BSD_INSTALL_PROGRAM} ipgen ${DESTDIR}${PREFIX}/bin/
-+	${BSD_INSTALL_DIR} -d ${DESTDIR}${MANDIR}/man1
-+	${BSD_INSTALL_MAN} ipgen.1 ${DESTDIR}${MANDIR}/man1
+ 	${INSTALL_PROGRAM} ipgen ${DESTDIR}${PREFIX}/bin/
+-	${INSTALL_PROGRAM} webserv ${DESTDIR}${PREFIX}/bin/
+ 	${INSTALL} -d ${DESTDIR}${MANDIR}/man1
+ 	${INSTALL_MAN} ipgen.1 ${DESTDIR}${MANDIR}/man1
  
- sequencecheck: sequencecheck.c seqcheck_test.c
- 	$(CC) -o $@ sequencecheck.c $(CFLAGS) -DTEST
diff --git a/net-mgmt/ipgen/files/patch-htdocs-GNUmakefile b/net-mgmt/ipgen/files/patch-htdocs-GNUmakefile
deleted file mode 100644
index 6d0071b1769d..000000000000
--- a/net-mgmt/ipgen/files/patch-htdocs-GNUmakefile
+++ /dev/null
@@ -1,10 +0,0 @@
---- htdocs/GNUmakefile.orig	2024-05-27 06:59:46 UTC
-+++ htdocs/GNUmakefile
-@@ -12,5 +12,5 @@ install:
- depend:
- 
- install:
--	install -o root -g wheel -m 755 -d ${DESTDIR}${PREFIX}/share/ipgen/htdocs
--	install -o root -g wheel -m 444 ${FILES} ${DESTDIR}${PREFIX}/share/ipgen/htdocs
-+	${BSD_INSTALL_DIR} ${DESTDIR}${PREFIX}/share/ipgen/htdocs
-+	${BSD_INSTALL_DATA} ${FILES} ${DESTDIR}${PREFIX}/share/ipgen/htdocs
diff --git a/net-mgmt/ipgen/files/patch-script-GNUmakefile b/net-mgmt/ipgen/files/patch-script-GNUmakefile
deleted file mode 100644
index 4040df97081c..000000000000
--- a/net-mgmt/ipgen/files/patch-script-GNUmakefile
+++ /dev/null
@@ -1,12 +0,0 @@
---- script/GNUmakefile.orig	2024-05-27 06:59:46 UTC
-+++ script/GNUmakefile
-@@ -26,6 +26,6 @@ install:
- depend:
- 
- install:
--	install -o root -g wheel -m 555 log2graph ${DESTDIR}${PREFIX}/bin/ipgen_log2graph
--	install -o root -g wheel -m 755 -d ${DESTDIR}${PREFIX}/share/ipgen/script
--	install -o root -g wheel -m 444 ${FILES} ${DESTDIR}${PREFIX}/share/ipgen/script
-+	${BSD_INSTALL_SCRIPT} log2graph ${DESTDIR}${PREFIX}/bin/ipgen_log2graph
-+	${BSD_INSTALL_DIR} ${DESTDIR}${PREFIX}/share/ipgen/script
-+	${BSD_INSTALL_SCRIPT} ${FILES} ${DESTDIR}${PREFIX}/share/ipgen/script