Re: After an update, VM's no longer have Internet access

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On 1/26/19 7:55 PM, Patrick O'Callaghan wrote:
> The plot thickens. First of all, my snippet from wireshark was of
> course wrong as I was monitoring virbr0 instead of vnet0. Silly me.
>
> Secondly, after a reboot to make sure everything was in default state,
> I fired up the Fedora guest alone, and lo and behold it worked. Then I
> fired up the Windows guest. It didn't work. Took it down and now the
> Fedora guest stopped working. Stopped and restarted both of them and
> they both work. Then suddenly they don't. Then they do again, or one
> does and the other doesn't.
>
> While all this is going on, I try ping6 to both of them. It always
> works, even when ping doesn't.
>
> My theory is that something is messing with DHCP. I'm running dnsmasq
> but I've been doing that for months. However avahi is also running, so
> perhaps there's some kind of conflict. And libvirtd apparently also
> runs its own dnsmasq internally, according to 
> https://wiki.libvirt.org/page/Libvirtd_and_dnsmasq

Well, I only have Fedora guests and I just switched an existing one to use the NAT and
running multiple guests works OK.

I don't run my own instance of dnsmasq.  Just these of libvirt

[egreshko@meimei ~]$ ps -eaf | grep dnsmasq
dnsmasq   1357     1  0 20:09 ?        00:00:00 /usr/sbin/dnsmasq
--conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro
--dhcp-script=/usr/libexec/libvirt_leaseshelper
root      1358  1357  0 20:09 ?        00:00:00 /usr/sbin/dnsmasq
--conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro
--dhcp-script=/usr/libexec/libvirt_leaseshelper


[egreshko@meimei ~]$ ps -eaf | grep avahi
avahi      760     1  0 20:08 ?        00:00:00 avahi-daemon: running [meimei.local]
avahi      918   760  0 20:08 ?        00:00:00 avahi-daemon: chroot helper

I currently don't have a Windows guest.

-- 
Right: I dislike the default color scheme Wrong: What idiot picked the default color scheme
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