19:27:47.782291 98:9b:cb:: > ff:ff:ff:ff:ff:ff, ethertype Unknown (0x88e1), length 60:
0x0000: 0000 a000 b052 38e5 d57f 0000 0000 0000 .....R8.........
0x0010: 0000 0000 0000 0000 0000 0000 0000 0000 ................
0x0020: 0000 0000 0000 0000 0000 0000 0000 ..............
19:27:47.782293 98:9b:cb:: > ff:ff:ff:ff:ff:ff, ethertype Unknown (0x8912), length 60:
0x0000: 0170 a000 0000 1f84 e5a3 97a2 5553 bef1 .p..........US..
0x0010: fcf9 796b 5214 13e9 e200 0000 0000 0000 ..ykR...........
0x0020: 0000 0000 0000 0000 0000 0000 0000 ..............
My router is sending this garbage into my network and I'd like to block it, as one cannot disable it. Doing so via iptables
has proven to be more challenging than I thought it would be:
root@fw:~ # iptables -A INPUT -m mac --mac-source 98:9b:cb:: -p 0x88e1 -j DROP
iptables v1.8.2 (nf_tables): unknown protocol "0x88e1" specified
Try `iptables -h' or 'iptables --help' for more information.
Is there any way to block an invalid ether-type?