IPv6 | The Internet of Things

I was just looking at the routing on my notebook computer (running Linux), which has both Ethernet and WiFi connections, by using the ip (-6) route show command.  For IPv4, it shows my local lan, via ethernet has a metric of 1 and WiFi, 2.  No surprise here, as I'd expect it to favour Ethernet.  But when I check again for IPv6, both connections show the same metric of 256 and the default route, via the link local address, both have a metric of 1024.


Why do the metrics for IPv6 appear to be so much greater than IPv4 and why do the two connections have the same metrics for IPv6, but different for IPv4?

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Strange...I'm not seeing anything like that on Windows



IPv4 Route Table
Active Routes:
Network Destination Netmask Gateway Interface Metric 266 On-link 306 On-link 306 On-link 306 On-link 276 On-link 276 On-link 276 On-link 266 On-link 266 On-link 266 On-link 306 On-link 276 On-link 266 On-link 306 On-link 276 On-link 266
Persistent Routes:
Network Address Netmask Gateway Address Metric Default Default Default

IPv6 Route Table
Active Routes:
If Metric Network Destination Gateway
11 266 ::/0 fe80::21d:a2ff:feaf:2ffc
1 306 ::1/128 On-link
11 18 2001:470:c27d:f000::/64 On-link
11 266 2001:470:c27d:f000:e5a8:7a95:1acb:983e/128
13 276 fe80::/64 On-link
11 266 fe80::/64 On-link
13 276 fe80::cdf7:690d:2c19:237/128
11 266 fe80::e5a8:7a95:1acb:983e/128
1 306 ff00::/8 On-link
13 276 ff00::/8 On-link
11 266 ff00::/8 On-link
Persistent Routes:


Do you have 2 interfaces on that computer?  On my notebook, both Linux and Windows show different IPv4 metrics for the 2 interfaces, though with different metrics between Linux and Windows.  I don't see a metric value for IPv6 on Windows on either my computer or yours, unless I'm mis-reading the info.



No, just the one interface



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