diff options
Diffstat (limited to 'src/conf_mode')
| -rwxr-xr-x | src/conf_mode/dhcp_server.py | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/src/conf_mode/dhcp_server.py b/src/conf_mode/dhcp_server.py index 9be586cdf..1ab2d8d16 100755 --- a/src/conf_mode/dhcp_server.py +++ b/src/conf_mode/dhcp_server.py @@ -26,6 +26,7 @@ from vyos.template import render from vyos.util import call from vyos.util import dict_search from vyos.validate import is_subnet_connected +from vyos.validate import is_addr_assigned from vyos.xml import defaults from vyos import ConfigError from vyos import airbag @@ -246,10 +247,19 @@ def verify(dhcp): if net.overlaps(net2): raise ConfigError('Conflicting subnet ranges: "{net}" overlaps "{net2}"!') + for address in (dict_search('listen_address', dhcp) or []): + if is_addr_assigned(address): + listen_ok = True + # no need to probe further networks, we have one that is valid + continue + else: + raise ConfigError(f'listen-address "{address}" not configured on any interface') + + if not listen_ok: - raise ConfigError('DHCP server configuration error! None of the configured\n' \ - 'subnets have an appropriate primary IP address on any\n' - 'broadcast interface.') + raise ConfigError('None of the configured subnets have an appropriate primary IP address on any\n' + 'broadcast interface configured, nor was there an explicit listen-address\n' + 'configured for serving DHCP relay packets!') return None |