Hey guys, I just have a question, I have been troubleshooting this for a while but it's not making any sense to me. My SMB shares were working just fine for years until last week, I noticed that I can't do file transfers. I can browse the shares but once I start a file transfer, it freezes File Explorer. I also tried to mount the same SMB shares in Linux with Dolphin and it crashes Dolphin too. I know it's not firewall related because I can browse into it and my VLAN computers can ping Unraid and vice versa. But then I tried to run iperf and found this: iperf3 -c 192.168.0.204 Connecting to host 192.168.0.204, port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] local 192.168.30.23 port 39468 connected to 192.168.0.204 port 5201 [ 5] 0.00-1.00 sec 384 KBytes3.14 Mbits/sec 2 1.41 KBytes [ 5] 1.00-2.00 sec 0.00 Bytes 0.00 bits/sec 1 1.41 KBytes [ 5] 2.00-3.00 sec 0.00 Bytes 0.00 bits/sec 0 1.41 KBytes There is traffic and then it drops right away. Which I think makes sense, I can browse then File Explorer hangs up. When I do reverse: iperf3 -c 192.168.0.204 -R [ ID] Interval Transfer Bitrate [ 5] local 192.168.30.23 port 33236 connected to 192.168.0.204 port 5201 [ 5] 0.00-1.00 sec 112 MBytes 941 Mbits/sec [ 5] 1.00-2.00 sec 112 MBytes 941 Mbits/sec [ 5] 2.00-3.00 sec 112 MBytes 942 Mbits/sec It works just fine. Now I tried to change my end point. I created a new VLAN that basically can flow my entire network and it worked. So basically, I've isolated my issue to just the 192.168.0.x VLAN/subnet. But I don't get why, I don't think it's firewall related because I never changed any rules in the past week and the fact that ICMP works both ways. I checked MTU along the path and ensured jumbo frames are disabled. Any ideas? Edit: Thanks folks in advance