On Sun, 14 Nov 2010 17:04:10 -0800 (PST), Landy Landy <landysaccount@xxxxxxxxx> wrote: > --- On Sun, 11/14/10, Amos Jeffries <squid3@xxxxxxxxxxxxx> wrote: > >> From: Amos Jeffries <squid3@xxxxxxxxxxxxx> >> Subject: Re: Problems with hotmail and facebook >> To: "Landy Landy" <landysaccount@xxxxxxxxx> >> Cc: squid-users@xxxxxxxxxxxxxxx >> Date: Sunday, November 14, 2010, 7:42 PM >> On Sun, 14 Nov 2010 16:19:41 -0800 >> (PST), Landy Landy >> <landysaccount@xxxxxxxxx> >> wrote: >> > Someone suggested to disable pmtu on squid and on the >> linux gw. >> > >> > I was able to disable it on linux: >> > >> > echo 1 >Â /proc/sys/net/ipv4/ip_no_pmtu_disc >> > >> > That hasn't change anything. >> > >> > Now, do I really need to disable it on squid in order >> to work? I read >> this: >> > >> > disable-pmtu-discovery= >> > Control Path-MTU discovery usage: >> > off lets OS decide on what to do (default). >> > transparent disable PMTU discovery when transparent >> support is enabled. >> > always disable always PMTU discovery. >> > >> > In many setups of transparently intercepting proxies >> Path-MTU >> > discovery can not work on traffic towards the clients. >> This is >> > the case when the intercepting device does not fully >> track >> > connections and fails to forward ICMP must fragment >> messages >> > to the cache server. If you have such setup and >> experience that >> > certain clients sporadically hang or never complete >> requests set >> > disable-pmtu-discovery option to 'transparent'. >> > >> > but, that option is "unrecognized" by squid. Is it >> really necessary to >> > disable it on squid? If so, how? >> >> Strange. That option is accepted in all 3.0 and later >> releases. >> Â http_port ... disable-pmtu-discovery=off >> >> Being the default it should not need to be set. But wont >> hurt for >> debugging. >> >> > Amos. > > I've tried with both 3.0.24 and 3.1.9: > > 2010/11/14 20:57:24| cache_cf.cc(363) parseOneConfigFile: squid.conf:406 > unrecognized: 'disable-pmtu-discovery=off' > optimum-router:/home/landysaccount# /usr/local/squid3/sbin/squid > > 2010/11/14 20:58:30| cache_cf.cc(363) parseOneConfigFile: squid.conf:406 > unrecognized: 'disable_pmtu_discovery=off' > > > 2010/11/14 21:00:38| cache_cf.cc(363) parseOneConfigFile: squid.conf:406 > unrecognized: 'disable-pmtu-discovery' > Ah, it is a flag on http_port lines. Not a line by itself. I don't think its related to the problem though. The details so far given have been that the reply is broken and not being processed well. PMTU breakage leads to a "zero sized reply" error. > I'm going crazy with this hotmail problem can't get it working again. I > had to disable squid and just forward all traffic, even though it works, I > need squid running in the middle. > > What do you suggest??? > Can you grab a tcpdump of one of these failing replies please? Amos
