Daemon.err nlbwmon

Installing and Using OpenWrt
1

Is this one known, a problem?

Mon Mar 10 02:42:45 2025 daemon.err nlbwmon[2332]: Unable to dump conntrack: No buffer space available
Mon Mar 10 02:43:45 2025 daemon.err nlbwmon[2332]: Netlink receive failure: Out of memory

I found this issue - is this solution still something to take into account?

This error occurs from time to time on my

root@One:~# ubus call system board
{
	"kernel": "6.6.73",
	"hostname": "One",
	"system": "ARMv8 Processor rev 4",
	"model": "OpenWrt One",
	"board_name": "openwrt,one",
	"rootfs_type": "squashfs",
	"release": {
		"distribution": "OpenWrt",
		"version": "24.10.0",
		"revision": "r28427-6df0e3d02a",
		"target": "mediatek/filogic",
		"description": "OpenWrt 24.10.0 r28427-6df0e3d02a",
		"builddate": "1738624177"
	}
}
2

What do you get in conntrack -C ?
There is some scale issue in coontrack-L that it tales enormous( > O(N) ) time with ton of connections.

3 
root@One:~# conntrack -C
265

root@One:~# conntrack -C
449
4

Add/create /etc/sysctl.conf with these parameters and reboot:

rp_filter = 2
net.core.rmem_default=1048576
net.core.wmem_default=1048576
net.core.rmem_max=1048576
net.core.wmem_max=1048576
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