On Sun, 1 Sep 2024, John Conover wrote:


The MAC filter needs a local filter for the two 16 X dual hex, (23
total,) digits.

The MAC is router usually aligned internally by the router, and
contains unique hex digits.

Does any anyone recall how to query the digits to the display?

Every reply I've seen talks about local macs.

arp -a

ipv4.firewall17.home.woodall.me.uk (192.168.100.1) at 00:16:3e:e0:70:01 [ether] 
on eth0

if you're using ipv4

Don't know a good way on ipv6, best I can think of is
ping ff02::1

64 bytes from fe80::216:3eff:fee0:7001%eth0: icmp_seq=3 ttl=64 time=2.15ms

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