On Fri, Jun 09, 2017 at 05:37:44PM +0100, Jason McIntyre wrote: > why do you have to specify 0.0.0.0 *and* dynaddr?
If there is no address on the interface, the code in sppp_set_ip_addrs() loops over an empty interface address list and hence does nothing. IPCP will still negotiate an address but as a result of how spp_set_ip_addrs() works this address won't show up on the interface :-/ This behaviour is yet another silly implementation detail of sppp(4). It could probably be fixed but I would treat this as an unrelated problem. But I do understand how this can be confusing. I think the documentation could be made more clear by phrasing it as "updating an address" instead of "assigning an address". I'll send an updated patch soon. Regardless, you probably *do* want a dummy address. An address is needed in order to add a dummy default route which will be updated once the pppoe interface comes up (more details forthcoming in my reply to naddy's question).
