Невозможно отключить http2

[raven_kg на megaline.kg]

Приветствую!

Потребовалось отключить http2 для всех хостов, убрал из всех listen 
упоминания http2, перезапустил nginx. В логах так и продолжают сыпаться 
запросы HTTP/2.0. Чем может быть обусловлено такое поведение?

# nginx -V
nginx version: nginx/1.14.0
built with LibreSSL 2.7.4
TLS SNI support enabled
configure arguments: --prefix=/usr/share/nginx 
--sbin-path=/usr/sbin/nginx --modules-path=/usr/lib64/nginx/modules 
--conf-path=/etc/nginx/nginx.conf 
--error-log-path=/var/log/nginx/error_log 
--http-log-path=/var/log/nginx/access_log 
--http-client-body-temp-path=/var/lib/nginx/tmp/client_body 
--http-proxy-temp-path=/var/lib/nginx/tmp/proxy 
--http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi 
--http-uwsgi-temp-path=/var/lib/nginx/tmp/uwsgi 
--http-scgi-temp-path=/var/lib/nginx/tmp/scgi --pid-path=/run/nginx.pid 
--lock-path=/run/lock/subsys/nginx --user=nginx --group=nginx 
--with-file-aio --with-threads --with-http_ssl_module 
--with-http_v2_module --with-http_v2_hpack_enc --with-http_realip_module 
--with-http_addition_module --with-http_xslt_module=dynamic 
--with-http_image_filter_module=dynamic --with-http_geoip_module=dynamic 
--with-http_sub_module --with-http_dav_module --with-http_flv_module 
--with-http_mp4_module --with-http_gunzip_module 
--with-http_gzip_static_module --with-http_random_index_module 
--with-http_secure_link_module --with-http_degradation_module 
--with-http_slice_module --with-http_stub_status_module 
--with-http_perl_module=dynamic --with-mail=dynamic 
--with-mail_ssl_module --with-pcre --with-pcre-jit --with-stream=dynamic 
--with-stream_ssl_module --with-google_perftools_module --with-debug 
--add-dynamic-module=headers-more-nginx-module-0.32 
--add-dynamic-module=ngx_devel_kit-0.3.1rc1 
--add-dynamic-module=lua-nginx-module-0.10.13 
--add-dynamic-module=nginx-eval-module-master 
--add-dynamic-module=ngx_brotli --with-ld-opt='-lcrypto -lssl -ltls 
-L/opt/libressl/lib -Wl,-rpath=/opt/libressl/lib -lrt -Wl,-z,relro 
-specs=/usr/lib/rpm/redhat/redhat-hardened-ld -Wl,-E' 
--with-cc-opt='-DNGX_LUA_ABORT_AT_PANIC -I/opt/libressl/include -O2 -g 
-pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions 
-fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches 
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic 
-DTCP_FASTOPEN=23'