Date: Fri, 19 Dec 1997 08:50:21 -0000 From: "Bob Bishop" <rb@gid.co.uk> To: <hackers@freebsd.org> Cc: <rb@gid.co.uk> Subject: I'm not normally paranoid, but... Message-ID: <199712190851.IAA18965@cwagate>
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Hi, I've been investigating trouble with a client's dial-on-demand PPP (FBSD 2.1.5, but I don't think it matters). Most of the time it works just fine. The specific problem is that sometimes the link fails to disconnect when it is (or should be) idle; timeout is set to 3 min. Tcpdump says: 07:47:14.537061 207.68.137.75.http > [client's address].1369: . 0:1(1) ack 1 w in 17520 07:47:14.537422 [client's address].1369 > 207.68.137.75.http: R 773:773(0) win 0 07:48:14.467440 207.68.137.75.http > [client's address].1369: . 0:1(1) ack 1 w in 17520 07:48:14.467906 [client's address].1369 > 207.68.137.75.http: R 773:773(0) win 0 07:49:14.477160 207.68.137.75.http > [client's address].1369: . 0:1(1) ack 1 w in 17520 07:49:14.477588 [client's address].1369 > 207.68.137.75.http: R 773:773(0) win 0 There is no PTR for 207.68.137.75 and it doesn't ping. However, guess whose web site http://207.68.137.75 leads to :-{ So why does it insist on flogging a dead connexion? And is there anything I can do about it, short of reducing the idle timeout to < 1min (which doesn't seem sensible)? TIA -- Bob Bishop +44 118 977 4017 rb@gid.co.uk
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