On 6/19/2025 04:21, Ronald Klop wrote:
Hi,I don't know the details about your setup, but I tried dhcpcd in my network last few months and I encountered that it:- runs fine in a 14.X jail on a 14.X machine (RPI3B) for both IP4 and IP6 👍- it does not work well on a 14.X jail on a 15.x machines. (RPI4)The symptoms look a lot like what you describe. Sometimes it got an address and a day later it was gone again. Restarting sometimes helped, often didn't change anything. Up to the point that I started reading to code of dhcpcd and encountered that it writes a line in the log about getting a lease and the next statement was sending a packet out on the network and I never see that packet in tcpdump.Anyway on the RPI3 I still use it. On the RPI4 I went back to dhclient + SLAAC after I put a lot of time in tcpdumping and testing. Maybe it is just that 14 userland doesn't match enough with 15 kernel to do BPF/dhcp. But than again.... with dhclient it works fine.I didn't run dhcpcd yet on the host OS yet as I was first testing it in the VNET jails.Just my 2 cents. Regards, Ronald.
Now that's very curious.Could you (where you can control what's going on with the other end, which I can't) try again with "noip4ll" and "noarp" and see if you still get the oddness?
I have a suspicion this is the cause (from the docs "noarp" should be enough to disable both, but never hurts to stick 'em both in there) -- and if so then perhaps default behavior should be changed.
-- Karl Denninger k...@denninger.net /The Market Ticker/ /[S/MIME encrypted email preferred]/
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