Date: Tue, 15 Nov 2016 16:40:49 +1100 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: wo0x <wo0x@c-base.org> Cc: freebsd-ipfw@freebsd.org Subject: Re: [Bug 214419] ipfw coredump when try to add rule with table of IPv6 addresses Message-ID: <20161115163121.D2342@sola.nimnet.asn.au> In-Reply-To: <CAPTxRTfsmrZobxUBGzh_gHPLCdfyYr5N94dOJde6va4hWmmw9Q@mail.gmail.com> References: <CAPTxRTfsmrZobxUBGzh_gHPLCdfyYr5N94dOJde6va4hWmmw9Q@mail.gmail.com>
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On Mon, 14 Nov 2016 13:43:15 +0000, wo0x wrote:
> Hi there,
>
> I just subscribed to this list due to the subjected bug--and I am quite
> happy to find this trouble has yet been noted by others:
>
> # fwcmd=/sbin/ipfw
> # ${fwcmd} -f table dnssrv flush
> # ${fwcmd} table dnssrv create type addr
> # ${fwcmd} table dnssrv add 2a02:e00:fffd:139::9
> added: 2a02:e00:fffd:139::9/128 0
> # ${fwcmd} table dnssrv add 2001:41D0:A:0028::1
> added: 2001:41d0:a:28::1/128 0
> # ${fwcmd} table dnssrv add 2001:4860:4860::8844
> added: 2001:4860:4860::8844/128 0
> # ${fwcmd} add 20020 allow ip6 from any to "table(dnssrv)" out via gif0
> setup keep-state
> Segmentation fault (core dumped)
> # uname -v
> FreeBSD 11.0-STABLE #0 r308635: Mon Nov 14 08:55:15 UTC 2016
> root@tunnel.example.vnet:/usr/obj/usr/src/sys/CUSTOM
>
> When doing "ipfw list" all rules are with numbers lower to 20020 are listed
> correctly. Then again SegFault is notified and processing of further rules
> is interrupted, more precisely: The mandatory "65535 deny ip from any to
> any" is also missing.
Since 'setup' only applies to TCP flows, I'm wondering if you may get a
different result if you used 'allow tcp ...' instead of 'allow ip6 ...'?
cheers, Ian (probably wildly guessing wrong ..)
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