I just built up a small x86 unit using the same installation procedure (QNX6.5.0 SP1) image as 28 others (and yes, all with valid licenses!). Same CPU type - same everything (NIC’s etc). The units are all set up to accept telnet and phindows connections via inetd.
In this latest build however I lose the ability to connect either service after a few hours of up time. Restarting inetd does not help. Starting inetd with debug (-d) doesn’t even show an attempted connection. It appears to only be a problem when connecting over the LAN (wired in this case) - a "telnet localhost or telnet [my IP address] is fine. But not from any other machine on the same LAN be they Windows, Linux, QNX6 or QNX4.
A reboot fixes it - for a few more hours.
I have never seen this before. I have 28 of these builds out in the field and while it is fortunate that none have [so far] exhibited this problem, it makes me nervous not knowing what causes it - a time bomb waiting to go off perhaps.
It’s not super critical - only one of them is connected to the internet so that I can gain remote access. It’s mainly a facility for me when I visit them and want to connect in using my laptop using Phindows (mainly). The prospect of having to reboot a system simply to connect in does not do much for me…