Hi, I have some niche use cases that need support for "strong end system model" which can perform symmetric IP routing.
As far as I can see, there are some obstacles with NetBSD: 1. NetBSD uses "weak end system model", so a multihomed host is prone to ARP flux when multiple IP addresses are configured on the same subnet and on the same host. 2. Sending IP packets from eth0 to eth1 on the same host, results in a fast forward path, where packets are forwarded internally within the kernel, without leaving eth0 and traversing the network, which is not what I need. On Solaris 11.3 I can easily switch IP host models with this command: # ipadm set-prop -p hostmodel=strong ipv4 this enables symmetric routing and forces IP packets to traverse the network, even when sent between network interfaces on the same host. I'm not sure I can achieve anything similar on NetBSD and don't see any relevant sysctl settings for this. Any suggestions? Thanks.
