Pls, use masked packet marking

[reinerotto]

I suggest, to use masked packet marking, i.e. for tproxy configuration. To avoid possible interference with other software, i.e. for PBR or auto failover between interfaces. Example:
meta l4proto { tcp, udp } meta mark set meta mark & 0xffffff00 | 0x00000001 tproxy ip to 127.0.0.1:1080 counter accept
ip rule add fwmark 1/0xff table 100 priority 500 #To have reasonable prio here avoids clash with mwan3-nft (openwrt)