Greetings po||ux, This is jrmu from IRC. So, I took a look at this issue: https://github.com/ngircd/ngircd/issues/228 OK po||ux , it's confirmed, the reason why the hashes aren't working is because ngircd hashes twice. Suppose I have 2 ngircd servers (X and Y) set up connected to each other. The salt is 9UdVFZOQszoWpvLAIXSvqF. On server X I use telnet to connect to 127.0.0.1 port 6667. So the hostmask is 127.0.0.1, and the salt is appended to get the string 127.0.0.19UdVFZOQszoWpvLAIXSvqF. This is hashed to give fde34f9b on the other server, the hostmask is fde34f9b. The salt 9UdVFZOQszoWpvLAIXSvqF is appended to give the string fde34f9b9UdVFZOQszoWpvLAIXSvqF, this is then hashed to give 93973dfb. So on server X, the hostmask is fde34f9b, and on server Y the hostmask is 93973dfb. What needs to be done is server Y must not hash the hostmask a 2nd time, and just pass through as is. The question now is, when a new user connects to X, should server X broadcast the uncloaked IP address and let server Y cloak it again; or should server X broadcast the cloaked IP and server Y should *not* cloak? I have a fix using the 2nd solution (server Y does not cloak): https://github.com/ngircd/ngircd/blob/master/src/ngircd/client.c line 340 I change the line to read: if (Conf_CloakHost[0] && strchr(Client->host, '.')) { That appears to solve the bug. I tested it and it seems to be working on my side. If you want demo servers to verify, just PM me on IRC. Now the hostmask renders properly before cloaking a host, the server will check to see if there is a period in the hostname, if so it has not yet been cloaked; if there is no ., it has already been cloaked and there's no need to cloak a second time. jrmu