Date: Sat, 21 Mar 2020 13:52:37 +0100 From: Jan Behrens <jbe-mlist@magnetkern.de> To: Victor Sudakov <vas@sibptus.ru> Cc: freebsd-net@freebsd.org, "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> Subject: Re: IPv6 in jails Message-ID: <20200321135237.12c09875dc0d695bdc99349d@magnetkern.de> In-Reply-To: <20200321043502.GA51499@admin.sibptus.ru> References: <20200318151556.GA64871@admin.sibptus.ru> <2dd539ed-0ee3-079b-27b2-28126056c69a@quip.cz> <20200318155046.GD65497@admin.sibptus.ru> <4CA69535-0F6C-40FC-83CF-5000FD728C2D@lists.zabbadoz.net> <20200319184502.02545d3a849fd60fe63a717f@magnetkern.de> <20200321043502.GA51499@admin.sibptus.ru>
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On Sat, 21 Mar 2020 11:35:02 +0700 Victor Sudakov <vas@sibptus.ru> wrote: > Jan Behrens wrote: > > > > > Can you then do a jexec test4 and run service sshd restart and see if it > > > starts working? > > > > I experienced the same problem as discussed in this thread when I set > > up IPv6 with my server. Strangely, when I rebooted the host system and > > simply started the jails one after the other (with a freshly booted > > host system), the problem didn't occur, but maybe that was just random. > > > > A "service sshd restart" inside the jail always seemed to help, which > > is why I also assumed there was some sort of race condition. But maybe > > it is related to some addresses being in use yet when restarting a jail? > > Does this happen only with IPv6 jail addresses? Yes, I did not notice any problem with the IPv4 addresses. When I do "jexec -l <jailname> csh -l" and then enter "netstat -an", I see that sometimes sshd does not listen on the configured IPv6 address but on the configured IPv4 address. Whenever this happens, I can solve it with "service sshd restart" inside the jail. It also does not seem to happen when I reboot the host system and start the jails for the first time. In that case, sshd listens on both IPv4 and IPv6 (at least when I last tried, I'm not sure if this always works). > -- > Victor Sudakov, VAS4-RIPE, VAS47-RIPN > 2:5005/49@fidonet http://vas.tomsk.ru/ -- Jan
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