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Date: Mon, 16 Feb 2015 08:30:12 -0700 From: David Ahern <dsahern@...il.com> To: Toerless Eckert <tte@...fau.de>, Sowmini Varadhan <sowmini05@...il.com> CC: Bill Fink <billfink@...dspring.com>, Cong Wang <cwang@...pensource.com>, netdev <netdev@...r.kernel.org> Subject: Re: vnet problem (bug? feature?) On 2/16/15 3:13 AM, Toerless Eckert wrote: > I fail to find a good reference explaining why linux would default to > rp_filtering = 1 (more appropriate for routers) even if forwarding defaults to 0 > (more appropriate for multi-homed hosts). It's a userspace default. For Fedora/Red Hat based systems see /etc/sysctl.conf (older releases) and /usr/lib/sysctl.d/50-default.conf (newer ones). I recall it defaulting to 1 in the early 2000's so it has been that way for a long time. From Documentation/networking/ip-sysctl.txt: rp_filter - INTEGER ... Default value is 0. Note that some distributions enable it in startup scripts. David -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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