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dde55c6c0e
Commit 7df5496e7b revealed a regression introduced in commit 5a71509353
which broke IPCP reset state.
ask_for_local was set to 0 if ouraddr initial value is 0, if
ask_for_local was false go->ouraddr was cleared in reset callback,
commit 5a71509353 breaks it by removing this clearing. This regression
was silent because the whole ppp pcb runtime data was cleared before
reconnecting until commit 7df5496e7b which removed this giant clearing.
Fix it by reintroducing ask_for_local boolean value, with proper initial
value following what unused function ip_check_options do.
Fixes: 7df5496e7b ("PPP, rework initial/reconnect cleanup")
Fixes: 5a71509353 ("PPP, CORE, IPCP: removed useless ask_for_local boolean")