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IPv6 Datacenter Adds SOCKS5 UDP ASSOCIATE Support

IPv6 Datacenter Adds SOCKS5 UDP ASSOCIATE Support

FlashProxy IPv6 Datacenter now supports SOCKS5 UDP ASSOCIATE. Route UDP through datacenter IPv6 IPs on existing credentials, no extra setup.

F
FlashProxy Team
May 15, 2026
1 min read

Key takeaways

  • FlashProxy's IPv6 Datacenter plan now supports the SOCKS5 UDP ASSOCIATE command.
  • The feature works on existing credentials and endpoints, with no separate tunnel or protocol switch required.
  • UDP ASSOCIATE, defined in RFC 1928, tells a SOCKS5 proxy to relay connectionless UDP packets instead of TCP streams.
  • Most commercial proxy providers support only TCP because running a UDP relay at scale is operationally harder.

FlashProxy has added support for the SOCKS5 UDP ASSOCIATE command to its IPv6 Datacenter plan. The capability is live on existing credentials - customers on IPv6 Datacenter can route UDP traffic through their current SOCKS5 endpoint without provisioning a separate tunnel or switching protocols.

UDP ASSOCIATE is one of three commands defined in the SOCKS5 specification (RFC 1928), and it tells the proxy to open a relay for connectionless UDP packets rather than the TCP streams SOCKS5 handles by default. Most commercial proxy providers ship only the TCP path, because implementing a UDP relay at scale is operationally harder. For IPv6 Datacenter customers, this brings UDP transport to a plan built for high-volume operations against IPv6-reachable destinations - same endpoint, same credentials, expanded capability.

UDPSOCKS5

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