Re: what network device to use?

["Jeremy C. Reed" <reed%reedmedia.net@localhost>]

Responding to two below:

On Sat, 6 Sep 2025, Michael van Elst wrote:

> Would be interesting what card (in particular what PHY) then did work.

This connects but no DHCP:

re0 at pci2 dev 0 function 0: RealTek 8168/8111 PCIe Gigabit Ethernet 
(rev. 0x03)
re0: interrupting at msix1 vec 0
re0: Ethernet address b8:ac:6f:df:49:9d
re0: using 256 tx descriptors
rgephy0 at re0 phy 7: RTL8211B 1000BASE-T media interface
rgephy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 
1000baseT-FDX, auto

> Since you get tagged packets, you need to filter them with vlan(4)
> and also tell dhcpcd to use the vlan interface (or ignore
> the physical interface).

(See below.)

On Sat, 6 Sep 2025, Martin Husemann wrote:

> See vlan(4), it has an example for vlan ID 6 with a tlp(4), just replacing
> your physical interface and 6 with 0 should get you going.
>
> Some providers do this here too, sometimes with a (http) management
> interface for their device on a separate vlan ID (or w/o vlan tagging).

ifconfig vlan0 create

ifconfig vlan0 vlan 0 vlanif re0
ifconfig: SIOCSETVLAN: Invalid argument

I don't get that error when using vlan 1 for example. (But that isn't 
what I need and dhcpcd using that vlan doesn't work for me.)

I was able to use the the network on a Linux system immediately 
(automatic). tcpdump showed me:

07:38:33.074299 ce:e1:7f:9a:9d:6f > 00:2b:67:b8:1d:da, ethertype 802.1Q 
(0x8100), length 1428: vlan 0, p 0, ethertype IPv4, 104.18.198.52.443 > 
47.185.125.200.40598: Flags [P.], seq 1167108418:1167109776, ack 
1025903144, win 16, options [nop,nop,TS val 1448907829 ecr 103792809], 
length 1358

(But the Linux system using Driver r8169 only negotiated 100 Mb/s.)

On NetBSD tcpdump also shows me the tagging:

13:00:06.694196 ce:e1:7f:9a:9d:6f > ec:74:27:cf:e3:20, ethertype 802.1Q 
(0x8100), length 60: vlan 0, p 0, ethertype IPv4, 176.65.149.186.40713 > 
47.161.125.35.23: Flags [S], seq 1581101836, win 65535, length 0

13:00:08.862782 ce:e1:7f:9a:9d:6f > ff:ff:ff:ff:ff:ff, ethertype 802.1Q 
(0x8100), length 60: vlan 0, p 0, ethertype IPv4, 47.185.64.1 > 
224.0.0.1: igmp query v3

But I never saw any destined to my re0 (hw address).

As for SIOCSETVLAN: Invalid argument maybe the version of NetBSD I am 
using doesn't support "vlan 0".

I can upgrade the NetBSD system, but before I do should I use current?