diff --git a/net-mgmt/pmacct/Makefile b/net-mgmt/pmacct/Makefile
index ddfe7b8b521e..926075275e45 100644
--- a/net-mgmt/pmacct/Makefile
+++ b/net-mgmt/pmacct/Makefile
@@ -1,91 +1,95 @@
 PORTNAME=	pmacct
 DISTVERSION=	1.7.9
 CATEGORIES=	net-mgmt
 MASTER_SITES=	http://www.pmacct.net/
 
 MAINTAINER=	pi@FreeBSD.org
 COMMENT=	Accounting and aggregation tool for IPv4 and IPv6 traffic
 WWW=		http://www.pmacct.net/
 
 LICENSE=	GPLv2
 
 LIB_DEPENDS=	libcdada.so:devel/libcdada
 
 USES=		gmake libtool pkgconfig localbase autoreconf
 USE_RC_SUBR=	pmacctd nfacctd sfacctd
 SUB_FILES=	pkg-message
 GNU_CONFIGURE=	yes
 
 OPTIONS_DEFINE=	MYSQL PGSQL SQLITE3 LAYER2 DEBUG GEOIP2 \
 		DOCS RABBITMQ REDIS KAFKA AVRO EXAMPLES
 OPTIONS_DEFAULT=LAYER2
 OPTIONS_SUB=	yes
 
 AVRO_DESC=	Enable avro support
 GEOIP2_DESC=	Enable GeoIPv2 (libmaxminddb) support
 KAFKA_DESC=	Enable Kafka support
 LAYER2_DESC=	Enable Layer-2 support: MAC addresses and VLANs
 PGSQL_DESC=	PostgreSQL database support (broken)
 RABBITMQ_DESC=	Enable RabbitMQ/AMQP support
 REDIS_DESC=	Enable Redis support
 SQLITE3_DESC=	Enable SQLite3 support
 
 SQLDOC=		"@comment "
 
 MYSQL_USES=		mysql
 MYSQL_CONFIGURE_ENABLE=	mysql
 MYSQL_VARS+=	SQLDOC=""
 
 PGSQL_USES=		pgsql
 PGSQL_CONFIGURE_ENABLE=	pgsql
 PGSQL_VARS+=		WANT_PGSQL=client
 PGSQL_VARS+=		SQLDOC=""
 
 SQLITE3_USES=		sqlite
 SQLITE3_CONFIGURE_ENABLE=	sqlite3
 SQLITE3_VARS=		SQLDOC=""
 
 LAYER2_CONFIGURE_ENABLE=	l2
 DEBUG_CONFIGURE_ENABLE=		debug
 
 RABBITMQ_LIB_DEPENDS=		librabbitmq.so:net/rabbitmq-c
 RABBITMQ_CONFIGURE_ENABLE=	rabbitmq
 
 REDIS_LIB_DEPENDS=		libhiredis.so:databases/hiredis
 REDIS_CONFIGURE_ENABLE=		redis
 
 KAFKA_LIB_DEPENDS=		librdkafka.so:net/librdkafka
 KAFKA_CONFIGURE_ENABLE=		kafka
 
 AVRO_LIB_DEPENDS=		libavro.so:devel/avro-c
 AVRO_CONFIGURE_ENABLE=		avro
 
 GEOIP2_LIB_DEPENDS=		libmaxminddb.so:net/libmaxminddb
 GEOIP2_CONFIGURE_ENABLE=	geoipv2
 
 .include <bsd.port.options.mk>
 
 .include <bsd.port.pre.mk>
 
 .if ${ARCH} == "i386"
 EXTRA_PATCHES+=	${FILESDIR}/extra-patch-i386
+# powerpc: force the byte-copy Assign macros; the simple ones truncate 16/32-bit
+# values into u_char packet fields (fails -Werror on BE, wrong ethertype).
+.elif ${ARCH:Mpowerpc*}
+CFLAGS+=	-DNEED_ALIGN
 .endif
 
 PLIST_SUB+=	SQLDOC=${SQLDOC}
 
 .if ${PORT_OPTIONS:MRABBITMQ} || ${PORT_OPTIONS:MKAFKA}
 LIB_DEPENDS+=	libjansson.so:devel/jansson
 CONFIGURE_ARGS+=--enable-jansson
 .endif
 
 post-install:
 	${MKDIR} ${STAGEDIR}${EXAMPLESDIR}
 	(cd ${WRKSRC}/examples && ${COPYTREE_SHARE} . ${STAGEDIR}${EXAMPLESDIR})
 	${MKDIR} ${STAGEDIR}${DOCSDIR}
 	${INSTALL_DATA} ${WRKSRC}/docs/[A-Z]* ${STAGEDIR}${DOCSDIR}
 .for i in AUTHORS CONFIG-KEYS COPYING ChangeLog FAQS INSTALL QUICKSTART UPGRADE
 	${INSTALL_DATA} ${WRKSRC}/${i} ${STAGEDIR}${DOCSDIR}
 .endfor
 	${MKDIR} ${STAGEDIR}${DATADIR}
 
 .include <bsd.port.post.mk>
diff --git a/net-mgmt/pmacct/files/patch-src_pmacct.h b/net-mgmt/pmacct/files/patch-src_pmacct.h
new file mode 100644
index 000000000000..6592e4d35b87
--- /dev/null
+++ b/net-mgmt/pmacct/files/patch-src_pmacct.h
@@ -0,0 +1,16 @@
+--- src/pmacct.h.orig	2026-09-16 06:48:00 UTC
++++ src/pmacct.h
+@@ -106,9 +106,13 @@
+ #endif
+ 
+ #if defined IM_BIG_ENDIAN
++#undef ntohs
+ #define ntohs(x) (x)
++#undef ntohl
+ #define ntohl(x) (x)
++#undef htons
+ #define htons(x) (x)
++#undef htonl
+ #define htonl(x) (x)
+ #endif
+