FreeGameDev

Im having a bit of trouble getting a duel server the way I want it--
Seems when you lock the mode to deathmatch, I cant get it let players vote between noremal duel and insta dual, and on top of that it seems map voting gets disables as well, if this is some variable that Im not seeing then fine, but it seems like locking it down to one mode disables the rest of the voting, am I missing something obvious?

Try these settings:

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sv_modelockfilter 4     // Limits modes to only Deathmatch
sv_modelock 6           // Restricts voting non-limited modes to admins only (in this case, anything other than Deathmatch)
sv_mutslockfilter 72    // Limits mutators to only duel and instagib. (use 328 to allow Arena as well)
sv_defaultmode 2        // Server defaults to choosing Deathmatch
sv_defaultmuts  64      // Server defaults to choosing Duel
sv_rotatemode  0        // Don't rotate GameModes when server picks
sv_rotatemuts  0        // Don't rotate Mutators when server picks

Unfortunately, that wont get you exactly what you want, because anyone can deselect duel when they vote. If you want it to always be duel no matter what, you will unfortunately have to disallow voting entirely.
However, you could achieve this with some effort. If you set your server to be Open, thus allowing a Helper, you can allow only Helpers to be able to vote, and they can see if others on the server want insta or not, and can set the mutators accordingly.
In an open server, anyone can claim Helper by pressing F5 (or using /setpriv 1).

Keep things like varslock set to something higher than 2 so that Helpers cannot change vars, and modelock to something higher than 4 for the same reason. If you'd like to take this approach, in addition to the settings above, also set:

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sv_votelock 4

Still not the most ideal solution, but somewhat close. Good luck with your server :)

Interesting, thanks.