From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Sat, 11 Dec 2021 17:26:22 +0000 (+0900)
Subject: network: drop IPv6LL addresses manually configured in .network file
X-Git-Tag: v250-rc3~33^2~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9e86dba94b4e6d13f2bd621f2017c5b0628800f7;p=thirdparty%2Fsystemd.git

network: drop IPv6LL addresses manually configured in .network file
---

diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c
index 7cd4d27c074..c4a666a908c 100644
--- a/src/network/networkd-address.c
+++ b/src/network/networkd-address.c
@@ -895,8 +895,11 @@ int link_drop_addresses(Link *link) {
                 if (!address_exists(address))
                         continue;
 
-                /* We consider IPv6LL addresses to be managed by the kernel, or dropped in link_drop_ipv6ll_addresses() */
-                if (address->family == AF_INET6 && in6_addr_is_link_local(&address->in_addr.in6))
+                /* Do not drop IPv6LL addresses assigned by the kernel here. They will be dropped in
+                 * link_drop_ipv6ll_addresses() if IPv6LL addressing is disabled. */
+                if (address->source == NETWORK_CONFIG_SOURCE_FOREIGN &&
+                    address->family == AF_INET6 &&
+                    in6_addr_is_link_local(&address->in_addr.in6))
                         continue;
 
                 k = address_remove(address);