Resolved HELP! Wifi jumps to Neighbors Wifi

i have 3 devices (macbook pro, ipad , iphone) connects neighbors wifi though system preferences > network says i connected ssid.

if go router admin page (192.168.1.254), not see u-verse admin page neighbors dsl router admin page. turning wifi on/off resolves problem sometimes.

have changed ssid.

how possible?

update:
problem turns out culprit roommate using netgear power line adapter , next door neighbor , encryption wasn't enabled on adaptors. whenever device requested ip address, found first dhcp respond , connected network.

 

i can't speak ipad or iphone, use neither, on mac, go to:

system preferences > network > airport > advanced > airport​

and remove network preferred networks list. also, neighbor should protect network password, others can't connect it.

 

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