downloaded .jnlp won't open

Is it possible to make this change permanent, or do I need to

        echo 0 > /proc/sys/net/ipv6/bindv6only

every time I restart?

John

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Follow-Ups:
- Re: downloaded .jnlp won't open
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References:
- downloaded .jnlp won't open
  - From: John O Laoi <brianolaoi@gmail.com>
- Re: downloaded .jnlp won't open
  - From: godo <goran@dobosevic.com>
- downloaded .jnlp won't open
  - From: John O Laoi <brianolaoi@gmail.com>
- Re: downloaded .jnlp won't open
  - From: "Boyd Stephen Smith Jr." <bss@iguanasuicide.net>
- Re: downloaded .jnlp won't open
  - From: Chris Bannister <mockingbird@earthlight.co.nz>