Den fre 14 dec. 2018 kl 03:58 skrev Philip Guenther <guent...@gmail.com>: > On Thu, Dec 13, 2018 at 10:40 AM Ted Unangst <t...@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.
