On Sunday 13 December 2020 at 13:02:45, Florian Zieboll via Dng wrote:

> Am 13. Dezember 2020 12:01:39 MEZ schrieb Antony Stone
<Antony.Stone@???>:
> > Well, here's the output from "dmesg | grep eth". It shows the r8169
> > interfaces being given names eth0, eth1 (the ones I want as eth1 and
> > eth2), then the tg3 interface gets called eth2 (which I want as eth0).
> >
> > At 6 seconds in, you can see my 70-persistent-net.rules file kicking in
> > and renaming then to xeth2, xeth1 and xeth0; then finally at 12 seconds,
> > the second rename in /etc/network/interfaces sets them back to eth0,
> > eth1 and eth2 in the order I want them.
>
> So have you tried with 'ifnames=1'?

I hadn't, but I've just done so now - it makes no difference - here's dmesg:

[    0.000000] Linux version 4.19.0-10-amd64 (debian-kernel@???) 
(gcc version 8.3.0 (Debian 8.3.0-6)) #1 SMP Debian 4.19.132-1 (2020-07-24)
[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.19.0-10-amd64 
root=UUID=9cbc8bd3-4cb8-4ae1-92c5-5a3659e9aed6 ro net.ifnames=1 quiet

[    3.394364] r8169 0000:04:00.0 eth0: RTL8168e/8111e, 00:e0:4c:80:21:6b, XID 
2c200000, IRQ 30
[    3.394368] r8169 0000:04:00.0 eth0: jumbo features [frames: 9200 bytes, tx 
checksumming: ko]
[    3.450174] r8169 0000:05:00.0 eth1: RTL8168e/8111e, 00:e0:4c:80:21:6c, XID 
2c200000, IRQ 31
[    3.450177] r8169 0000:05:00.0 eth1: jumbo features [frames: 9200 bytes, tx 
checksumming: ko]
[    3.489342] tg3 0000:07:00.0 eth2: Tigon3 [partno(BCM95723) rev 5784100] 
(PCI Express) MAC address 78:ac:c0:f7:89:f7
[    3.489347] tg3 0000:07:00.0 eth2: attached PHY is 5784 (10/100/1000Base-T 
Ethernet) (WireSpeed[1], EEE[0])
[    3.489350] tg3 0000:07:00.0 eth2: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] 
TSOcap[1]
[    3.489352] tg3 0000:07:00.0 eth2: dma_rwctrl[76180000] dma_mask[64-bit]
[    6.187233] tg3 0000:07:00.0 xeth0: renamed from eth2
[    6.231916] r8169 0000:05:00.0 xeth2: renamed from eth1
[    6.246745] r8169 0000:04:00.0 xeth1: renamed from eth0

> And are you sure, that the 'hwaddress' lines in your
> '/etc/network/interfaces' really define which NIC to use?

I'm not using hwaddress in that file - that was a suggestion from terryc, and I
think it's the wrong idea for exactly the following reason:

> AFAICT this option just changes ("spoofs") the MAC address of the NIC for
> which it is defined. Although the log confirms that finally eth0 is the tg3
> NIC, this seems unusual (and very counterintuitive) to me.


Thanks,


Antony.

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