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59ab29fbd1
When clagd anycast ip configuration changes on an existing setup, we have two issues: - populate_dependency_info is run twice (in the ifreload case), first on the new ifaceobjs, then on the old ifaceobjs. Thus hitting vxlan.get_dependent_ifacenames twice where vxlan._clagd_vxlan_anycast_ip is set (the first time properly, then reset to it's old value). The fix: add a "old_ifaceobjs" flag to avoid resetting vxlan._clagd_vxlan_anycast_ip - when clagd anycast ip changes, clagd also updates the vxlan's ip but there's a chance that the ifupdown2 cache won't get the netlink notification in time before UP ops are running on the vxlans, running on a stale cache is no bueno. The fix: add additional checks to see if we should trust the cache of not. Signed-off-by: Julien Fortin <jfortin@nvidia.com>