[Bug 272827] dhclient: gives up after 1 second despite spec saying it should wait for longer

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 30 Jul 2023 21:11:06 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272827

            Bug ID: 272827
           Summary: dhclient: gives up after 1 second despite spec saying
                    it should wait for longer
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: nazar@mokrynskyi.com

Together with support from my ISP I have discovered several issues with
dhclient in pfSense (based on FreeBSD 14):
https://redmine.pfsense.org/issues/14604

The most annoying is that it gives up after 1 second after DHCPDISCOVER despite
according to RFC 2131 it should wait up to 10 seconds.

Linux and Windows clients do not have such issue, hence I believe this is a bug
in FreeBSD.
Above pfSense report has more details and network packet capture of
communication between dhclient and DHCP server of my ISP.

Let me know if I should create bug reports here for other issues mentioned in
pfSense bug report linked above.

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