--- b/net-mgmt/mk-livestatus/Makefile	
+++ b/net-mgmt/mk-livestatus/Makefile	
@@ -2,9 +2,11 @@ 
 
 PORTNAME=	mk-livestatus
 PORTVERSION=	1.2.8p25
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	net-mgmt
-MASTER_SITES=	http://mathias-kettner.de/download/
+MASTER_SITES=	https://mirrors.xtom.com/freebsd-ports/distfiles/check_mk/ \
+		https://mirrors.xtom.nl/freebsd-ports/distfiles/check_mk/ \
+		http://mathias-kettner.de/download/
 DIST_SUBDIR=	check_mk
 
 MAINTAINER=	egypcio@FreeBSD.org
@@ -12,9 +14,6 @@ COMMENT=	Nagios event broker module
 
 LICENSE=	GPLv2
 
-BROKEN_FreeBSD_13=	ld: error: duplicate symbol: g_mainthread_id
-BROKEN_FreeBSD_14=	ld: error: duplicate symbol: g_mainthread_id
-
 USES=		compiler:c++11-lang
 
 GNU_CONFIGURE=	yes
@@ -61,4 +60,11 @@ post-install-EXAMPLES-on:
 		${PORTEXAMPLES:S|^|${WRKSRC}/api/python/|}
 	${INSTALL_DATA} ${PORTEXAMPLES:S|^|${WRKSRC}/api/python/|} ${STAGEDIR}${EXAMPLESDIR}
 
-.include <bsd.port.mk>
+.include <bsd.port.pre.mk>
+
+# Fix building with clang 11 ("ld: error: duplicate symbol: g_mainthread_id")
+.if ${OSVERSION} >= 1300000
+CFLAGS+=	-fcommon
+.endif
+
+.include <bsd.port.post.mk>
--- b/net-mgmt/mk-livestatus/distinfo	
+++ b/net-mgmt/mk-livestatus/distinfo	
@@ -1,3 +1,3 @@ 
-TIMESTAMP = 1551174701
+TIMESTAMP = 1634456011
 SHA256 (check_mk/mk-livestatus-1.2.8p25.tar.gz) = 3da53e234724517cd1ecbbd1dcdffb9a7dbbb325861fac9398e40ad6d1fdffe9
 SIZE (check_mk/mk-livestatus-1.2.8p25.tar.gz) = 453525