Following are a number of back-translations as well as a sample translation for translators of Proverbs 17:6:

• Kupsabiny: “An old person is proud of his grandchildren,
  and children are happy for/rejoice over their parents.” (Source: Kupsabiny Back Translation)
• Newari: “Grandchildren are the prestige of the aged.
  and parents are the prestige of the children.” (Source: Newari Back Translation)
• Hiligaynon: “Pride of the grandparents/[lit. old-ones] are their grandchildren, as also pride of the children are their parents.” (Source: Hiligaynon Back Translation)
• Kankanaey: “The old-men speak-highly-of/boast-about their grandchildren and the children, they also speak-highly-of/boast-about their parents (lit. their child owner).” (Source: Kankanaey Back Translation)
• English: “Old people are usually proud of their grandchildren,
  just like children are usually proud of their parents.” (Source: Translation for Translators)