[Bug 261129] IPv6 default route vanishes with rtadvd/rtsold

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 11 Jan 2022 21:48:51 UTC

            Bug ID: 261129
           Summary: IPv6 default route vanishes with rtadvd/rtsold
           Product: Base System
           Version: 13.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: meka@tilda.center

As I only started researching IPv6, there's a high probability I did something
wrong, and if see something off, please let me know. What I observe is desktop
acquiring IPv6 and setting proper default route, and after few minutes that
route is gone. Strangely, when IPv6 is configured through dhcpcd, default route
remains. I saw same behavior on laptop which has wlan0 and em0 as part of
lagg0, so if there's some wrong config, I suspect it's on the router.

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