BostonDriver <BostonDriver.34fi2o@no-mx.wirelessforums.org> hath
wroth:

>I do pass traffic, as I can ping to a vhost I has on the
>Internet and do not see many drops. However, web traffic from sites
>with large pages pretty much stops. In a different browser, 'Google'
>(http://www.google.com) works just fine at this time.
>
>If I plug in the ethernet cable, everything works fine, e.g. all the
>sites I try to reach are really up.

Let me guess. You have a PPPoE DSL internet connection and your
neighbor with the open access point has a cable modem? Checking
66.129.232.2 ... Groan. You're posting from work at Juniper? Oh
well.

My guess(tm) is that the difference is that PPPoE needs a slightly
smaller MTU. Try setting the MaxMTU on your new laptop to 1492
instead of the usual 1500.

See explanation at 14.25:
<http://www.lib.ru/LINUXGUIDE/freebsd_faq.html#MACOS-WIN98-PPPOE-FREEZE>

On your FreeBSD box, try:
ping -s 1472 -D your_ISP_gateway_IP_address
or
ping -s 1472 -M your_ISP_gateway_IP_address
1472 is actually a 1500 byte header due to the 28 byte header. (20
for the header and 8 for the PPPoE). If you're running PPPoE on your
DSL connection it should fail. Note that you're pinging your ISP, not
your local router. Now, decrease the MTU size to 1492 - 28 = 1464 and
try again. If my guess(tm) is correct, the 1472 will drop packets,
while the 1464 will work.

If you can find a Windoze box, you migth also try MTUroute.exe v2.1:
<http://www.elifulkerson.com/projects/mturoute.php>
If you can't find the Linux version or Windoze box, try the web based
version at:
<http://www.elifulkerson.com/projects/mtu-eyechart.php>

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558