From: Patrik Flykt <patrik.flykt@linux.intel.com>
Date: Fri, 24 Aug 2018 15:49:18 +0000 (-0600)
Subject: networkd-dhcp6: Fix PD prefix length for subnet assignment
X-Git-Tag: v240~792^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=37f52406d979cee10d93467552e5311aa7afe186;p=thirdparty%2Fsystemd.git

networkd-dhcp6: Fix PD prefix length for subnet assignment

When computing the next network prefix to assign, compute the next
prefix to allocate based on the intended /64 assignment, not the
given prefix length for the whole prefix, e.g. /48, given to
systemd-networkd.

Fixes #9626.
---

diff --git a/src/network/networkd-dhcp6.c b/src/network/networkd-dhcp6.c
index a64545b937b..5a233307329 100644
--- a/src/network/networkd-dhcp6.c
+++ b/src/network/networkd-dhcp6.c
@@ -174,7 +174,7 @@ static int dhcp6_pd_prefix_distribute(Link *dhcp6_link, Iterator *i,
 
                 n_used++;
 
-                r = in_addr_prefix_next(AF_INET6, &prefix, pd_prefix_len);
+                r = in_addr_prefix_next(AF_INET6, &prefix, 64);
                 if (r < 0 && n_used < n_prefixes)
                         return r;
         }