Date: Sat, 28 May 2016 21:56:20 -0400 From: Allan Jude <allanjude@freebsd.org> To: freebsd-jail@freebsd.org Subject: Re: [Bug 208001] After turning off the jail does not remove network routes Message-ID: <8a575b8b-e9e9-d79c-0b31-708e7bbd35fd@freebsd.org> In-Reply-To: <bug-208001-9824-kHE9fsBB6i@https.bugs.freebsd.org/bugzilla/> References: <bug-208001-9824@https.bugs.freebsd.org/bugzilla/> <bug-208001-9824-kHE9fsBB6i@https.bugs.freebsd.org/bugzilla/>
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On 2016-05-28 20:30, bugzilla-noreply@freebsd.org wrote: > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208001 > > --- Comment #5 from Jamie Gritton <jamie@FreeBSD.org> --- > Yes, of course there are cases where something besides a /32 is appropriate - > that is why jail(8) allows that. However, as I mentioned it did appear that > you had violated the specification that an alias should be on a non-conflicting > netmask. > > The fact remains that I am unable to reproduce your problem. Perhaps I could > if I had your entire configuration - all jails, all other network setup. > > jail(8) simply calls ifconfig(8) with "alias" to add IP addresses, and with > "-alias" to remove them - see the output of "jail -vc" and "jail -vr". The > jail will not be removed if the "ifconfig ... -alias" command fails, which > implies that the command is succeeding. Unless of course there actually is a > bug in the way jail(8) is running this program. My guess is the command is > succeeding, but isn't removing some arp entry because the alias when > incorrectly specified when it was created. > > If it's clear (from "jail -v") that the correct ifconfig commands are being > run, then this might be considered an ifconfig bug. If the correct commands > aren't being run, then it could be a jail bug. > I think that is actually the problem ifconfig -alias only accepts the IP address, not with the CIDR. #ifconfig lo0 alias 10.0.0.1/24 #ifconfig lo0 -alias 10.0.0.1/24 ifconfig: 10.0.0.1/24: bad value you want to do just: #ifconfig lo0 -alias 10.0.0.1 So jail(8) needs to strip the /24 off when passing it to ifconfig -alias -- Allan Jude
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