You still have to opt into it by enabling it in the nginx.conf. I don't
think it's worth it to add stuff to the nginx.conf, but it would be neat
not to have to recompile nginx.

https://nginx.org/en/docs/quic.html

Index: Makefile
===================================================================
RCS file: /cvs/ports/www/nginx/Makefile,v
diff -u -p -r1.177 Makefile
--- Makefile	16 May 2024 19:07:27 -0000	1.177
+++ Makefile	16 May 2024 21:50:55 -0000
@@ -41,7 +41,7 @@ PKGNAME-passenger=	nginx-passenger-${VER
 PKGNAME-rtmp=		nginx-rtmp-${VERSION}
 PKGNAME-securelink=	nginx-securelink-${VERSION}
 
-REVISION-main=		0
+REVISION-main=		1
 
 ONLY_FOR_ARCHS-passenger= aarch64 amd64 arm i386
 
@@ -191,6 +191,7 @@ CONFIGURE_ARGS+=	--prefix=${NGINX_DIR} \
 			--with-http_ssl_module \
 			--with-http_stub_status_module \
 			--with-http_v2_module \
+			--with-http_v3_module \
 			--with-http_xslt_module=dynamic \
 			--with-mail=dynamic \
 			--with-stream=dynamic \