network: assume Scope=host when Address= is loopback address

Fixes #14903.

2 files changed, 5 insertions, 0 deletions

diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c
index 59775869b6..6244f75201 100644
--- a/src/network/networkd-address.c
+++ b/src/network/networkd-address.c
@@ -1053,6 +1053,7 @@ int config_parse_address_scope(const char *unit,
                 }
         }
 
+        n->scope_set = true;
         n = NULL;
         return 0;
 }
@@ -1125,5 +1126,8 @@ int address_section_verify(Address *address) {
                                          address->section->filename, address->section->line);
         }
 
+        if (!address->scope_set && in_addr_is_localhost(address->family, &address->in_addr) > 0)
+                address->scope = RT_SCOPE_HOST;
+
         return 0;
 }
diff --git a/src/network/networkd-address.h b/src/network/networkd-address.h
index 6995c5c06e..ad2412c75a 100644
--- a/src/network/networkd-address.h
+++ b/src/network/networkd-address.h
@@ -39,6 +39,7 @@ struct Address {
         union in_addr_union in_addr;
         union in_addr_union in_addr_peer;
 
+        bool scope_set:1;
         bool ip_masquerade_done:1;
         bool manage_temporary_address:1;
         bool home_address:1;