xmrig-proxy variant=1 on monero7 not working
I had some issues sending v7 shares via proxy when some config items were a bit "off"
Firstly my old conf had coin "xmr" set and I added variant = 1 when fork hit today. 
(muscle memory from stellite fork, sorry)

My xmr-stak clients have currency = "monero7" set.
My xmrig 2.5.2 clients have variant -1.

It worked a couple of blocks after v7 fork, then started spitting invalid blocks from xmr-stak clients.
When I restarted xmrig-proxy, then all clients including xmrig sent v6 shares.

Went over all settings, did a new conf via config.xmrig.com and diffed old conf. discovered that "coin" was not included and algo should be used.
Swapped to algo="cryptonight" and variant=-1 in proxy, restarted then xmrig seem ok again.

xmr-stak still sending bad shares. 
minexmr pool support also verified v6 frames coming from my proxy.
Changed config at xmr-stak clients to bypass proxy, then it just works fine with the same "monero7" setting as before.
Something is off with regression it seems. 