Priority Settings (advanced) in firewall rule will silently drop the packets

[xtom42x]

when setting the prioriy in a firewall rule allowing traffic (set priority=voice(5), set priority [low-delay]=Voice(5)) the matching packets get silently dropped.

IPv4 Outbound Traffic NATed (for a SIP Trunk)

when i remove these advanced options everything works as expected

OPNsense 26.1.10-amd64

Regards,
  Tom

[sopex]

You probably should use Traffic Shaper:
https://docs.opnsense.org/manual/shaping.html#introduction

The settings you are changing don't necessarily do what you would expect:
https://docs.opnsense.org/manual/firewall.html#settings (Choose priority)

[xtom42x]

while you're technically right :)

the thing is I imported the firewall settings from an older "silbling" OPNsense where these settings worked (let traffic pass)

so the settings that worked before stopped working silently (was a hell to figure out the reason). Don't think that's how it should be (esp. if you use these options for what they are intended to do)

[lmoore]

I hit this problem too when I first set up my OPNsense firewall whilst configuring VoIP rules. The settings relate to the PCP of a VLAN interface - see Advanced in https://docs.opnsense.org/manual/firewall.html#id3

the thing is I imported the firewall settings from an older "silbling" OPNsense where these settings worked (let traffic pass)

so the settings that worked before stopped working silently (was a hell to figure out the reason). Don't think that's how it should be (esp. if you use these options for what they are intended to do)

Perhaps the reason the rules worked on the "sibling" could be due to the interface being a VLAN, whereas on this one it isn't.