Hello,
can somebody explain me what I'm doing wrong? I'm running OpenBSD 3.4 with two 10/100 
NICs with Realtek 8139.Box (P133, 32 MB RAM) is configured as a no-IP bridge with some 
simple pf rules.

In my home network with an old 10MHz hub and Cisco router everything works fine.
PC <---crosslink -->rl0 OPENBSD rl1 <----> HUB < ---> CISCO <----> Inet

When I move this PC to different network with D/link switch and WAN/LAN router the 
strange behaviour occurs. 
PC <----->SWITCH<------>rl0 OPENBSD rl1 <---crosslink--> ROUTER <---->Wireless 
receiver<----> Inet


Ping and POP3 to external places works OK, some web pages too, another WWW starts 
downloading and then stops. I hope there is no DNS error.

At first I've tried change NICs,cables,decrease media speed but no luck. When I 
disable pf, 
all data are passing thru the bridge without problem in any combination of NICs.  
Pf.conf 
contains now only rules for passing all on both interfaces. I don't think there is 
problem with 
the rules,because at home is all traffic OK.

What I'm missing? I can supply you with more data,I don't know where to start.
Can help some TCPdump? MTU,no-IP or an old (slow) machine problem?
Should I try router configuration? Actually I don't need router, all HW is on the same 
private 
C-network and ISP on the ROUTER NATed public address into interal network.
Does pf change in packet? ISP said me,that this is maybe the reason for problems.I 
can't 
still imagine why some pages are downloaded and some not.

Thanks  
Mira

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