cant play blade and soul with mudfish hope u can fix it fast
Which game server are you pointing? 
Is it for EU region?
Thank you for sending this problem report. When I checked this report, there's something wrong log messages as follows:
MUDEC_00279: arp: 10.254.124.24 moved from da:fe:42:a3:3b:1b to 00:ff:31:fe:41:cf on msk0
So I manually had reset some configuration at Mudfish side. Could you please test it again? If it's still same with the previous, please show me the core logs at "Status -> Process" menu.
That was one of the first things I tried. It didn't work. I also made sure to allow mudfish through my firewall. There isn't any group policy as it's a personal computer.
Here is another stdout from trying today.
This is with fastconnect off after attempting to change ports.
From what I can tell, I have trouble connecting to mudfish nodes at all, regardless of connection protocol. This normally wouldn't be a problem but a vast majority of them do not work. I've already made sure my firewall allows mudfish through and I'm not under any group policy. Occasionally however it works perfectly fine, though the same node that worked at the time would stop working if I disconnect and reconnect, and when it works fine the logs show no proper errors, like shown below.
It seems MUDEC_00279 is the main offender - it pops up every time I can't connect to a node.
Strange.. I switched to a different PC and tried using mudfish on this one instead. The log is below:
There's only a MUDEC_00179 in this one, which I can generally ignore. However, I'm running into similar issues that I do on my main PC, where packets only occasionally go through via the node but mostly just get dropped.
I have now tried both my router's connection and my phone's tether connection on both PCs. It fails to function on both of them. Strangely however, the 5GHz band seems to work perfectly, but because my main PC doesn't have a dual band adapter I can't try it on both.
I went and bought a dual band card today. Unfortunately, it didn't help. Here's the logs:
Umm.. When I checked your logs, I can see multiple PCs like DESKTOP-VG193JF and securenat-dafe42a33b1b. Are you running multiple VMs on your box? I can't understand why these DHCP lease requests are arriving to TAP-WIn32 adapter.