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Groups > linux.debian.user > #199049
| From | Andy Smith <andy@strugglers.net> |
|---|---|
| Newsgroups | linux.debian.user |
| Subject | Re: "accept_ra 1" vs "accept_ra 2" in interfaces configuration-file |
| Date | 2018-08-20 07:00 +0200 |
| Message-ID | <woKsh-1SC-1@gated-at.bofh.it> (permalink) |
| References | <woHXs-yw-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi Martin,
On Mon, Aug 20, 2018 at 05:12:56AM +0300, Martin T wrote:
> According to "man interfaces" "accept_ra 1" makes interface to accept
> IPv6 RA messages. "accept_ra 2" does the same and in addition, it also
> enables forwarding. What does the forwarding mean in this context? One
> could think, that it modifies the /proc/sys/net/ipv6/conf/*/forwarding
> file(s), but this does not seem to be the case.
If forwarding = 1 then by default RAs will not be accepted. Setting
accept_ra to 2 allows RAs to be accepted even when forwarding = 1.
Changing the values of either forwarding or accept_ra does not alter
the values of the other. Only the behaviour of the system.
Back in 2011 this was a hard-won battle:
http://strugglers.net/~andy/blog/2011/09/04/linux-ipv6-router-advertisements-and-forwarding/
Cheers,
Andy
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"accept_ra 1" vs "accept_ra 2" in interfaces configuration-file Martin T <m4rtntns@gmail.com> - 2018-08-20 04:20 +0200
Re: "accept_ra 1" vs "accept_ra 2" in interfaces configuration-file Andy Smith <andy@strugglers.net> - 2018-08-20 07:00 +0200
Re: "accept_ra 1" vs "accept_ra 2" in interfaces configuration-file Martin T <m4rtntns@gmail.com> - 2018-08-20 15:10 +0200
Re: "accept_ra 1" vs "accept_ra 2" in interfaces configuration-file Andy Smith <andy@strugglers.net> - 2018-08-21 00:30 +0200
Re: "accept_ra 1" vs "accept_ra 2" in interfaces configuration-file Martin T <m4rtntns@gmail.com> - 2018-08-22 00:10 +0200
Re: "accept_ra 1" vs "accept_ra 2" in interfaces configuration-file Andy Smith <andy@strugglers.net> - 2018-08-22 01:10 +0200
Re: "accept_ra 1" vs "accept_ra 2" in interfaces configuration-file Martin T <m4rtntns@gmail.com> - 2018-08-26 19:30 +0200
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