Beginner VLAN Routing Question

Hello Everyone,

I have a question that has been bothering me and I can't find any solution that makes sense online. I have a cat4500e that is serving as our distribution layer L3 switch and is running up to a couple Nexus 9k's at our core. Recently I setup a new network that required adding the vlan into the allowed for the trunk port coming from the access switch. That lead me looking into the netflow traffic and I'm noticing traffic is getting passed into the core that's not allowed on the port (vlan 81) in this example. Po148 is the port channel to the core switches. Shouldn't vlan 81 need added on the Po148 interface in order for traffic to traverse up into the core switches over that trunk? Any help understanding would be great. Thanks

Netflow
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IPV4 SOURCE ADDRESS: 10.48.81.94

IPV4 DESTINATION ADDRESS: 10.200.25.247

TRNS SOURCE PORT: 55026

TRNS DESTINATION PORT: 445

INTERFACE INPUT: Po4

IP TOS: 0x00

IP PROTOCOL: 6

interface output: Po148

counter bytes: 25900

counter packets: 105

timestamp first: 18:13:03.934

timestamp last: 18:13:03.934

Distribution switch config

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interface Port-channel148

switchport

switchport trunk native vlan 99

switchport trunk allowed vlan 200,240,400,410,3403

switchport mode trunk

mtu 917

interface Port-channel4

switchport

switchport trunk native vlan 99

switchport trunk allowed vlan 1,50,81,100,181,2081,2181,2231,2247

switchport mode trunk