Bug#873292: ip(8) changed syntax

[Riccardo Stagni]

I think the issue you are seeing is due to a syntax change in the ip(8)
command. Please compare:
https://manpages.debian.org/jessie/iproute2/ip-link.8.en.html
https://manpages.debian.org/stretch/iproute2/ip-link.8.en.html

ciao,
Riccardo