Hi,
You said one day before you got problem your DNAT on edge is working,
and after that problem was happened.
first, you need to check is there any change you did ? either on physical switch or edge ?
if not, can you ping the WAN IP's edge ?
if you can ping the WAN IP of edge but the DNAT is not working, you need to recheck NAT or FW rule on your edge.
ensure you didn't perform any fault.
may be any firewall issue only ..
And one more thing is it nested hosts ? .. If yes i have got the same issue .
Promiscuous Mode to Accept and check
regards
i don't understand why i have this comportement
i actived promiscious mode mais the problem persists
now i can't ping the DGW from the vms