Loki's etymology

From: João Simões Lopes Filho
Message: 36667
Date: 2005-03-07

According to Webster, ON Loki < PIE *leug- "to break, to destroy" > Sanskrit rugná- "broken".
 
Is it plausible?
 
Is there analogous development in names like, Logi, Loki, Bragi, Vili?
 
Joao SL