V2ray Slow Dns Server !full! < GENUINE › >

"address": "1.1.1.1", "domains": ["geosite:openai", "geosite:google"], "expectIPs": ["geoip:us"]

Using a geographically distant, overloaded, or blocked DNS server is a surefire way to experience slowdowns. Furthermore, the choice of your DNS has a significant impact on performance. For example, redir-host mode performs traditional DNS resolution before any routing decisions are made, creating a visible delay as the application waits for the lookup to complete.

Why this works: The first query to google.com hits 127.0.0.1:5353 . Dnsmasq fetches it (slow once), caches it. Subsequent queries take ~1ms. v2ray slow dns server

To configure V2Ray with a fast DNS server:

For DNS leak testing, connect your proxy and visit any online DNS leak test website. If the displayed DNS server IP matches your proxy's country location, you're safe. If it shows your local ISP's IP address, you have a DNS leak. "address": "1

A slow DNS server is often the silent killer of proxy performance. By understanding the interplay between DNS resolution and your V2Ray setup, you can systematically identify and eliminate these bottlenecks. Start by diagnosing the problem with log files and latency tests, then apply the relevant solutions—whether it's breaking a TUN mode deadlock, switching to fake-ip mode, or implementing encrypted protocols.

Every DNS lookup takes time. By default, V2Ray's built-in DNS component caches results, meaning it remembers the IP for a domain and doesn't need to look it up again for a certain period. However, if caching is misconfigured or disabled ( disableCache: true ), V2Ray will perform a fresh resolution for , leading to a massive performance penalty. Why this works: The first query to google

If you must use public DNS, test alternatives that are less likely to be throttled:

dns: exchange failed for [domain name]: context deadline exceeded dns: exchange failed for [domain name]: read: connection reset by peer

Instead of:

iptables -t mangle -I V2RAY -d 192.168.0.0/16 -p udp --dport 53 -j RETURN