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In many nftables examples, I sometimes see statement like this:

map nat-udp-services {
        type ipv4_addr . inet_service : verdict
    }

and this:

ip daddr . udp dport vmap @nat-udp-services

What does the dot (.) mean in these cases?

PPS
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1 Answers1

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Concatenation

There's some more details about it in the wiki

Raxi
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  • Excellent answer. Thank you so much. I had spent all day searching for all sorts of terms. Never crossed my mind to look for concatenation. – PPS Dec 16 '21 at 06:48
  • yea understandable , a 'dot' doesn't make for much of a search term :) – Raxi Dec 16 '21 at 06:55