Date: Tue, 29 Jul 2003 09:56:48 +0200 (CEST) From: Martin Blapp <mb@imp.ch> To: current@freebsd.org Subject: STEP 2, fixing dhclient behaviour with multiple interfaces Message-ID: <20030729094308.L41136@cvs.imp.ch>
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Hi all, I't is my goal to make dhclient really functional, so it can not only be used with one interface, but several. On a well known OS this works just fine. A first interface gets initialized and the GW gets set as usual. But if a second interface gets added, and the first one is still active and has a working lease, the GW will not be overwriten. If you remove now the first interface, the default GW changes to the one of the second interface. "X" = Link on IF "+" = Interface gets added or has new link "-" = Interface gets removed or lost link IF1 IF2 GW1 GW2 --------------- X X X + X - X X + X X Too this functionality to dhclient, there is only one way to do it. the ISC-dhclient package offers a OMAPI Command Shell omsshell(1). There you can add new interfaces or even remove existing ones. The work that needs to be done is: - Adding a unix domain socket to OMAPI, so root (or a choosen user) can access dhclient (or dhcpd) on the local machine without authentification. - Providing the omshell scripts for adding and removing interfaces, adding new default gateways on interface removal etc ... - Change our infrastructure (devd, rc.d/dhclient script) to use them. If there are other ideas, I'm open to them. Martin Martin Blapp, <mb@imp.ch> <mbr@FreeBSD.org> ------------------------------------------------------------------ ImproWare AG, UNIXSP & ISP, Zurlindenstrasse 29, 4133 Pratteln, CH Phone: +41 61 826 93 00 Fax: +41 61 826 93 01 PGP: <finger -l mbr@freebsd.org> PGP Fingerprint: B434 53FC C87C FE7B 0A18 B84C 8686 EF22 D300 551E ------------------------------------------------------------------
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