just testing ubuntu 18.04 beta 2 and have this exact same problem. removing and reloading the r8169 module fixes the problem, but i think it's a serious bug if networking is completely lost on every system suspend...
most users will not troubleshoot enough or be able to unload/reload drivers, having networking completely fail after every suspend is more than medium severity for what is tyo be an lts release.
just testing ubuntu 18.04 beta 2 and have this exact same problem. removing and reloading the r8169 module fixes the problem, but i think it's a serious bug if networking is completely lost on every system suspend...
most users will not troubleshoot enough or be able to unload/reload drivers, having networking completely fail after every suspend is more than medium severity for what is tyo be an lts release.