OpenWrt/LEDE Project

  • Status Unconfirmed
  • Percent Complete
  • Task Type Bug Report
  • Category Base system
  • Assigned To No-one
  • Operating System All
  • Severity Low
  • Priority Very Low
  • Reported Version openwrt-18.06
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by Mikma - 25.08.2019

FS#2464 - netifd: changing metric, ip4table or defaultroute flushes babeld's routes from the main table

Tested device: Virtual x86_64
Software versions:
openwrt 18.06.4
netifd 2019-01-31-a2aba5c7-2.1

* Use babeld as dynamic routing daemon.
* Verify that the main table contains routes inserted by babeld.
* Change one of metric, ip4table and defaultroute on a interface which have babeld’s routes in the main table.
* Run /etc/init.d/network reload
* The routes inserted by babeld for the above interface are now gone, which was unexpected.

It seems to be caused by the following section in interface.c:

        UPDATE(metric, reload_ip);
        UPDATE(proto_ip.no_defaultroute, reload_ip);
        UPDATE(ip4table, reload_ip);
        UPDATE(ip6table, reload_ip);
        if (reload_ip) {
                bool config_ip_enabled = if_old->config_ip.enabled;
                bool proto_ip_enabled = if_old->proto_ip.enabled;

                interface_ip_set_enabled(&if_old->config_ip, false);
                interface_ip_set_enabled(&if_old->proto_ip, false);
                interface_ip_set_enabled(&if_old->proto_ip, proto_ip_enabled);
                interface_ip_set_enabled(&if_old->config_ip, config_ip_enabled);


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