W dniu 31.01.2022 o 02:44, Amarendra Godbole pisze:
> My home network has a PC Engines apu2e4 running OpenBSD 7.0, acting as
> a firewall/router, dhcp server, and DNS server. A Ruckus wifi AP
> receives a fixed DHCP address from apu2e4. All devices connect to the
> AP, and receive IP address in the same subnet. apu2e4 has em0, em1 and
> em2, of which em0 is uplink from Comcast, and em1 and em2 are fixed to
> 192.168.10.1 and .2 respectively. I have dhcpd and unbound listening
> on both em1 and em2.
>
> Normally my laptop that receives an IP of 192.168.10.105 is able to
> ping the ap2e4 at 192.168.10.1 (and even ssh into it). Today I lost
> that connectivity first, and ping stopped working. A restart of
> network on apu2e4 got it working again. The problem kept repeating
> every few minutes (maybe 5 or so?), till I restarted network on the
> apu2e4/OpenBSD host.
>
> What changed today? In the morning, I applied the last two patches 009
> (expat) and 010 (vmm). So I uninstalled those, but as guessed, the
> problem did not go away. So now I switched to the other channel (em1),
> and the connectivity has been stable so far.
>
> I am completely in the dark here and do not have a clue as to what may
> have happened - something to do with networking, and possibly an
> ethernet channel going bad on apu2e4 since the second one works? Can
> anyone provide a few pointers on where I should start looking?
>
> Thanks in advance. dmesg attached.
>
> -Amarendra
So, you have em1 with 192.168.10.1/24 and em2 with 192.168.10.2/24?
Having two interfaces in the same subnet is a bad idea (unless they are
in seperate routing domains)
I think that what you want to do is:
- create bridge0
- move 192.168.10.1/24 address to bridge0
- remove IP address from em1 and em2
- attach em1 and em2 as bridge0 members
- make dhcpd, unbound and whatever listen on bridge0
Alternatively, change em2 IP address to be in other subnet than em1, for
example 192.168.20.1/24
--
Łukasz Moskała
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