Hi,
I run OPNSense 24.7.6. Last evening, IPv4 network connectivity broke. Restarting all services from the console menu did not help. A reboot was required.
This is what the General Log reveals:
Every 30 minutes, dhcp6c logs dhcp6c_script: RENEW on igb0 executing. igb0 is the WAN interface. Then, suddenly, radvd reports about 17 minutes later: sendmsg: No buffer space available. This message repeats every 5 seconds.
Pinging the LAN interface via IPv4(!) does not work. Neither can I reach any host on the LAN from OPNSense.
Only rebooting OPNSense brings operations back to normal. I had this once before with the previous version.
There are several reports of this issue in the forum but with little to no response nor solution. I am willing to contribute logs, configuration etc. to help solving the issue.
Kind regards,
Boris
did you find any solution?
I have same effect when putting 100% load on traffic, e.g. downloading multiple ISO same time to bring the WAN to 30MB/s...
Without lower load no issues...
Warning radvd sendmsg: No buffer space available