On Thu, Nov 16, 2023 at 04:18:48PM +0000, Steve Blinkhorn wrote: > You wrote: > > > > On Thu, Nov 16, 2023 at 03:48:49PM +0000, Steve Blinkhorn wrote: > > > In a situation where a NetBSD machine (9.2 amd64 if it matters) has > > > multiple network adapters each with multiple IP addresses > > > corresponding to diverse domain names, to what are port numbers > > > uniquely attached? > > > > > > > They're attached to IP addresses, either specific IP addresses or > > unspecified IP address (0.0.0.0 or ::). If the server application > > binds to the unspecified IP address the port is not bindable to specific > > IP addresses by other servers. > > > > So can two different IP addresses on the same adapter each use the same > port number each for its own distinct purposes? I would assume they > can since I run different web servers that use ports 80 and 443 in > this way. (Obviously I have a debugging problem that's irking me, > but I think is not strictly a NetBSD issue - I'm just trying to > eliminate wilder possible sources).
Yes, that's the idea.
