Re: Number of static IPv6 DNS servers limited to 3

[Anders Blomdell <anders blomdell control lth se>]

On 2021-09-09 18:08, Anders Blomdell wrote:
> On 2021-09-09 17:24, Beniamino Galvani wrote:
> > On Thu, Sep 09, 2021 at 04:42:45PM +0200, Anders Blomdell wrote:
> > > Even thogh the 'ipv6 setting' of 'nm-settings-dbus(5)' doesn't mention this limitation. The number of IPv4 
> > > DNS server seems to be limited to 10 DNS servers.
> > >
> > > Is this by design?
> >
> > In previous versions of NM the ifcfg-rh configuration plugin could only handle 10 DNS servers. This limit was 
> > raised here:
> >
> > https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/commit/00f63074d6200badb5193b69c60bd211d7a743f3
> >
> > This patch is not yet in any released version of NM.
> >
> > Beniamino
> I got bitten by it from nm-connection-editor, but since I'm running a Fedora system it might be that ifcfg-rh 
> is responsible. Will look into this tomorrow.

Weirder than expected :-(. I had problems duplicating the problem on a freshly
installed system, after (quite) some debugging it turned out that the problem was
that the current network configuration was backed by a file in /etc/sysconfig/network-scripts
updating the backing file limited the total number of DNS servers to 10, after cloning
the connection everything started working.

Thanks for the pointers...

/Anders