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This week, I ran in to a very similar situation with a client.
Their environment was R80.10 JHF Take 30 upgrading to R80.10 JHF Take 55.
Upon upgrade, it immediately broke all VPN attempts with a very similar error (unable to obtain Office Mode IP). In this particular situation, office mode IP addresses are administered by DHCP, which may be why the error differs.
This is a known issue in the later JHF releases, and support provided a specific hotfix to repair it.
Here is sk178767 for the issue:
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