Помогите настроить varnish, что я делаю не так?

DAEMON_OPTS="-a :81\
             -T localhost:80 \
             -f /etc/varnish/default.vcl \
             -S /etc/varnish/secret \
             -s malloc,256m"

Listen 81

NameVirtualHost ip домена:81

<VirtualHost ip домена:81 >

server {
    listen       81;

# service nginx restart
Stopping nginx:                                            [  OK  ]
Starting nginx: nginx: [emerg] bind() to 0.0.0.0:81 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:81 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:81 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:81 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:81 failed (98: Address already in use)
nginx: [emerg] still could not bind()
                                                           [FAILED]

server {
    listen       80;