Replacing wireless nic on my router

[Dmitry Kolosov]

> Maybe a silly question, it's more likely a wireless problem as you
> suspect, but are we sure there's no firewall involved that might be
> dropping DHCP responses on the client?

I will double check it.
If so, this firewall is not on client, cuz packets did not come to wireless 
nic at all. Firewall might to drop received packets, but tcpdump -y 
IEEE802_11_RADIO is silent of any packets from my AP (except auth). I will 
check firewall on AP.