giuliomoro is this when the network is not present from the beginning or when it is present when the program starts but is switched off while it's running?
Thanks for asking, it definitely happens each time I'm booting Bela while the network is not present. The Pd patch restarts over and over until I turn on the router, and it eventually connects and the patch continues as desired. Strangely enough, when I purposefuly turn the router off, it doesn't always make the Pd patch restart. However, the patch seems to restart spontaneously at random moments (although very seldom - I thing I've only encountered it once or twice) and it definitely restarts when I walk away from the router far enough so that Bela is not within the reach of the network. The real problem, though, is when the patch seems to be connected for a period of time and I try to send some OSC from the patch and it suddenly restarts.
In general, it's not that much of an issue as it usually happens only while I turn on Bela (sometimes the Pd patch would restart a couple of times before settling, or would restart once or twice while trying to send out some data over OSC) and when it eventually settles, it stays on for hours. Neverteless, I'm using two Bela-powered instruments for a piece on a major contemporary music festival and I'd like to exclude the possibility of the issue taking place in the middle of the performance...
I've just updated Bela from the dev branch and it doesn't seem to change anything.