Re: [PATCH] net: Prefer non link-local source addresses
flat view
From: David Lamparter <hidden>
Date: 2011-09-01 21:56:46
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On Thu, Sep 01, 2011 at 04:20:54PM -0400, Jeff Harris wrote:
Section 2.6.1 of RFC 3927 specifies that if link-local and routable addresses are available on an interface, a routable address is preferred. Update the IPv4 source address selection algorithm to use a 169.254.x.x address only if another matching address is not found.
quoted hunk ↗ jump to hunk
+ if (ipv4_is_linklocal_169(ifa->ifa_address)) { + lladdr = ifa->ifa_local; + continue; + }
IP addresses have a scope field:
# ip -4 a l eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
inet 10.0.0.1/24 brd 10.0.0.255 scope link eth0
inet 172.22.80.50/25 brd 172.22.80.127 scope global eth0
would it not make sense to use to use that field instead?
-David