Re: Network Interface Names in saved firewall rules

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On Tue, 29 Jan 2013 13:58:30 -0500, Bill Nottingham wrote:
> Tomasz Torcz (tomek@xxxxxxxxxxxxxx) said:
>>   If I understand right, there is not guarantee
>> "em1" would become "eno1" in 100% of cases.  Iptables saved config
>> would still need to be checked and verified.
> 
> It won't, but having it be the same in the case where it *does* have the
> same idea as biosdevname of 'first embedded interface', it could be
> useful to have the same name.

One way to handle this: when firewall rules are saved through firewalld 
(or iptables-services), it should also ask NetworkManager to save the 
network device names involved by their MAC addresses. Except when it 
knows a MAC address wouldn't be stable (e.g. tun/tap device with a kernel 
generated MAC address) or when running in a VM. The kernel could help in 
identifying devices would unstable MAC addresses.

Just a documented and supported way to avoid reconfiguring the firewall 
on Fedora upgrade when network device name policy could potentially 
change would also help.

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