Date: Fri, 21 May 1999 17:38:15 +0300 From: Anand Buddhdev <arb@anand.org> To: freebsd-questions@freebsd.org Subject: Path MTU discovery on FBSD Message-ID: <19990521173815.B1722@africaonline.co.ke>
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Today one of the firewalls at my upstream provider started to block ICMP. I noticed that a lot of my email started slowing down. I got a lot of deferrals (I'm using qmail). I have heard that this can happen when Path MTU discovery fails becuase of ICMP blocks. Does FreeBSD 3.1-RELEASE do this? How could I actually diagnose that this is indeed happening. I know about tcpdump, but I'm not very familiar with the details of TCP/IP. any pointers will be appreciated. Thanks, -- System Administrator See complete headers for address, homepage and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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