Re: netstat *:* udp sockets

Den fre 14 dec. 2018 kl 03:58 skrev Philip Guenther <guenther@gmail.com>:
> On Thu, Dec 13, 2018 at 10:40 AM Ted Unangst <tedu@tedunangst.com> wrote:
> > netstat -an tells me I am listening to all the udp.
> >
> > Active Internet connections (including servers)
> > Proto Recv-Q Send-Q Local Address Foreign Address
> > (state)
> > udp 0 0 *.* *.*
> > udp 0 0 127.0.0.1.53 *.*
> > udp 0 0 *.* *.*
> > udp 0 0 *.5353 *.*
> > udp 0 0 *.* *.*
> >
> > What are those *.* sockets doing? How can you listen to all the ports?
>
> Those are just UDP sockets on which connect() hasn't been called and that
> aren't in the middle of a recvfrom() or recvmsg(), no?

Isn't there something inherently weird in listing a lot of things
which "sort -u" would remove?

The streams at the bottom of netstat output are at least unique in some sense:
0xffff800001e50880 stream 0 0 0x0
0xffff800001e50900 0x0 0x0
..even if they might not tell me much more than udp *.*

--
May the most significant bit of your life be positive.