Date: Tue, 16 Mar 1999 22:48:16 -0800 From: bmah@CA.Sandia.GOV (Bruce A. Mah) To: "Jeff Yeo" <j.yeo@attcanada.net> Cc: "FBSDQuestions" <freebsd-questions@FreeBSD.ORG> Subject: Re: tcpdump startup Message-ID: <199903170648.WAA11148@stennis.ca.sandia.gov> In-Reply-To: Your message of "Tue, 16 Mar 1999 22:30:28 PST." <000301be703f$cb9765e0$0a01010a@upstairs.gvsa1.bc.wave.home.com>
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--==_Exmh_608600960P Content-Type: text/plain; charset=us-ascii If memory serves me right, "Jeff Yeo" wrote: > When I start tcpdump, it seems to take quite a long time > for it to start displaying anything. I know there is > network traffic because I am pinging from another > machine. Jeff- I'm going to bet that the delay you're seeing is due to the time to process a nameserver lookup (tcpdump will by default try to convert IP addresses found in packets to FQDNs). If that's the case, you can eliminate the nameserver lookups by giving the -n flag or writing raw packets to a file with -w. (Check the manpage for more details.) Bruce. --==_Exmh_608600960P Content-Type: application/pgp-signature -----BEGIN PGP MESSAGE----- Version: 2.6.2 iQCVAwUBNu9QL6jOOi0j7CY9AQGGRQQAg/8TTqAGZGxpqolG0xKtjzscr7sNVC0r fVpI+FWbT9DLT6s5TmIZwVzxdQxavOf3cGqFiecG9m/yEw6ZNUOrWRzvAuHGlz+4 iDkcyJu0Vqzsgcaf+bCoOsWqOfZ0UtqoIkkrQJXSmTzhVYZ/FteFmrUZ474T5ThN Fi/JF9WnqAU= =U3mI -----END PGP MESSAGE----- --==_Exmh_608600960P-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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