In D56835#1311163, @michaelo wrote:

There is one thing I'd really love to see what RC does not have at all: user units like systemd has. It often happens that our users want to run something in the background and I cannot offer anything, but to create an RC for them, install doas, delegate, etc. Too complex. For k5start on AL8 for a specific user I have created a user unit and it does what it should do: keep the Kerberos ticket cache alive. I'd love to hear your opinion on it.

Apply markj's suggestion, test for valid packet header.

In D57095#1308692, @markj wrote:

I ran this through the test suite and didn't see any problems, so it's ok with me. I wasn't able to reproduce the crash consistently before, only quite rarely, so it's hard to say that the problem is fixed for sure.

At a glance it's not clear to me that fin->fin_m is always going to have a mbuf header, i.e., that fin->fin_m->m_pkthdr will be valid.