proxy_for 1 [2001:0b28:f23d:f001:0000:0000:0000:000d]:8888;
proxy_for -1 [2001:0b28:f23d:f001:0000:0000:0000:000d]:8888;
proxy_for 2 [2001:067c:04e8:f002:0000:0000:0000:000d]:80;
proxy_for -2 [2001:067c:04e8:f002:0000:0000:0000:000d]:80;
proxy_for 3 [2001:0b28:f23d:f003:0000:0000:0000:000d]:8888;
proxy_for -3 [2001:0b28:f23d:f003:0000:0000:0000:000d]:8888;
proxy_for 4 [2001:067c:04e8:f004:0000:0000:0000:000d]:8888;
proxy_for -4 [2001:067c:04e8:f004:0000:0000:0000:000d]:8888;
proxy_for 5 [2001:0b28:f23f:f005:0000:0000:0000:000d]:8888;
proxy_for -5 [2001:0b28:f23f:f005:0000:0000:0000:000d]:8888;