What is wrong with networking with 64bit Arch?

Question

I have 3 hosts behind a router:
1 laptop with Arch i386
1 laptop with Arch x86_64
1 nettop with Arch x86_64
If I use 64 bit Arch, after about 15 minutes without touch anything (just in idle) the whole network stop working -> there is no internet connection, only LAN internal communications are available, but they are very slow, and the solution is to restart of the router.
I tested this with 3 different routers and the issue remains.
With 32 bit Arch there is no problems at all.
Do you experienced such kind of problems? This is very annoying!
May be 64 bit driver broke packets.

Answer 1

My network card of the nettop is Realtek RTL8167 and I didn't install any additional driver, just use those with installation. Main board is AT5ION-I.
Yesterday evening I migrate form i686 to x86_64 on the nettop - clean install, and after that upper mentioned problems began.
I have experienced such kind of problems in laptop with 64 bit Arch, too. The network cards are Broadcom (don't remember the model) and Intel WiFi 5100AGN.
All my analyses lead to problem with 64 bit driver and probably causing much network flood and broken packets.
PS: My LAN network is 10.74.87.0/24.
Last edited by clovenhoof (2011-12-13 10:06:30)