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Re:There are real reasons for Linux to replace ifconfig, net... by kees99 on Friday May 25, 2018 @09:14AM (#17153326)
I can take "mtu 1500" part, and sort-of "qdisc", but what's up with repeating obscure parameters at their default values, for each and IP address:

  valid_lft forever preferred_lft forever
Re:There are real reasons for Linux to replace ifconfig, net... by pas on Friday May 25, 2018 @09:51AM (#17153665)
Those are lifetimes for default (outgoing) address selection.

RFC 3484 "Default Address Selection for Internet Protocol version 6 (IPv6)".