Date: Thu, 13 Nov 2003 09:39:41 +0100 From: Pawel Jakub Dawidek <nick@garage.freebsd.pl> To: FB <freebsd@msquaredweb.net> Cc: freebsd-hackers@freebsd.org Subject: Re: Multiple IPs in Jail Message-ID: <20031113083941.GR84474@garage.freebsd.pl> In-Reply-To: <20031112180124.3F85943FD7@mx1.FreeBSD.org> References: <20031112180124.3F85943FD7@mx1.FreeBSD.org>
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[-- Attachment #1 --] On Wed, Nov 12, 2003 at 10:01:23AM -0800, FB wrote: +> We patched mijail5 (http://garage.freebsd.pl/mijail.README) against +> RELENG_5_1. Most of the patch was successful with a little fuzz, except for +> a couple lines in jls which didn't patch due to cosmetic changes (easily +> fixed). +> +> Before the patch was applied, the jail environment had no problem with dns. +> After the patch was applied however (and userland rebuilt both on host and +> jail), dns breaks in the jail environment. Basically, gethostbyname fails +> and h_errno is set to 2 - Host name lookup failure. the system is configured +> properly, since the only changes are to the kernel and the modified jail +> mechanism. Also interesting is that the failure is immediate, there is no +> timeout. +> +> However, inbound/outbound TCP traffic is not effected. - we are able to ssh +> in/out of the jailed environment. +> I was testing outbound UDP traffic however - simple matter of binding a +> socket to send a packet to a remote host. +> +> Outside the jail, it worked fine. inside the jail, sendto failed with a +> EINVAL error. +> +> Any help on this topic would be much appreciated. I've many reports about DNS problems with my patch in jail, that's true. I can't promise, but I'll try to find some time in few days to track this problem down. -- Pawel Jakub Dawidek pawel@dawidek.net UNIX Systems Programmer/Administrator http://garage.freebsd.pl Am I Evil? Yes, I Am! http://cerber.sourceforge.net [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (FreeBSD) iQCVAwUBP7NDTT/PhmMH/Mf1AQH5XQP7BUhcrwo5E5ISKq6UNg1jxdCh5Udku387 YFixtPunpkUCk58xpatG38iJFkWSaR4BObLhKF0zqpWuu/KiWIIn1ikUlM7A2Nv7 Yao/FF5UXTKz2RoozUDxtGXs7bJFW8ky8thZ+AzUl26FzrB+fzKxK1wypMsyudX6 1rSvwa8kB68= =WRh1 -----END PGP SIGNATURE-----
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