From 65844cbb8bc47ec1d2f69e02615fa2e0f29389c8 Mon Sep 17 00:00:00 2001
From: Alex Kudentsov <43482574+alexk37@users.noreply.github.com>
Date: Wed, 18 Mar 2026 11:25:32 +0700
Subject: T8399: move connectivity/overlap checks inside subnet loop

---
 src/conf_mode/service_dhcpv6-server.py | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

(limited to 'src')

diff --git a/src/conf_mode/service_dhcpv6-server.py b/src/conf_mode/service_dhcpv6-server.py
index d7b2f2a6d..b567c8ed9 100755
--- a/src/conf_mode/service_dhcpv6-server.py
+++ b/src/conf_mode/service_dhcpv6-server.py
@@ -241,22 +241,22 @@ def verify(dhcpv6):
 
             subnets.append(subnet)
 
-        # DHCPv6 requires at least one configured address range or one static mapping
-        # (FIXME: is not actually checked right now?)
-
-        # There must be one subnet connected to a listen interface if network is not disabled.
-        if 'disable' not in network_config:
-            if is_subnet_connected(subnet):
-                listen_ok = True
-
-            # DHCPv6 subnet must not overlap. ISC DHCP also complains about overlapping
-            # subnets: "Warning: subnet 2001:db8::/32 overlaps subnet 2001:db8:1::/32"
-            net = ip_network(subnet)
-            for n in subnets:
-                net2 = ip_network(n)
-                if (net != net2):
-                    if net.overlaps(net2):
-                        raise ConfigError('DHCPv6 conflicting subnet ranges: {0} overlaps {1}'.format(net, net2))
+            # DHCPv6 requires at least one configured address range or one static mapping
+            # (FIXME: is not actually checked right now?)
+
+            # There must be one subnet connected to a listen interface if network is not disabled.
+            if 'disable' not in network_config:
+                if is_subnet_connected(subnet):
+                    listen_ok = True
+
+                # DHCPv6 subnet must not overlap. ISC DHCP also complains about overlapping
+                # subnets: "Warning: subnet 2001:db8::/32 overlaps subnet 2001:db8:1::/32"
+                net = ip_network(subnet)
+                for n in subnets:
+                    net2 = ip_network(n)
+                    if (net != net2):
+                        if net.overlaps(net2):
+                            raise ConfigError('DHCPv6 conflicting subnet ranges: {0} overlaps {1}'.format(net, net2))
 
     if not listen_ok:
         raise ConfigError('None of the DHCPv6 subnets are connected to a subnet6 on '\
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