On Sun, 25 Jun 2023, Matthias Petermann wrote:
2) increased the ARP cache timeout net.inet.arp.nd_reachable=1200000 on both, Dom0 and DomU -> this seemed to have an effect at first, but the problem still exists (its not a measured fact but a feeling, that it happens now a bit less often and later)
Yeah, I had a feeling that we had just delayed that error, so I've cooked up another scheme get an ARP-cache entry with no expiry-time. Try this: 1. Enable broadcast ICMP-Echo replies on Dom0 and all the DomUs: sysctl -w net.inet.icmp.bmcastecho=1 2. Prime ARP-cache by doing a broadcast echo: ping -nc10 192.168.2.255 On -HEAD, this creates ARP-address entries with no expiration-time. Don't know if it'll work on 9.x. (On FreeBSD, the expiration-time is set to the default of 20 mins, so YMMV.) HTH, -RVP
