Update default UDP reader interface setup (INADDR_ANY), clarify bind and sockopts logic#552

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ce-rvi wants to merge 3 commits into

OceanDataTools:devfrom

ce-rvi:update-udp-reader-default-setup

Commits on May 4, 2026

Move to using socket.IPADDR_ANY as the fallback interface for multicast read, and remove redundant IP_MULTICAST_IF sockopt
ce-rvi
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Fix import cherry-pick resolve
ce-rvi
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Commits on Jun 23, 2026

Consolidate conditional logic in mc_group + interface setup in constructor. Use inet_ntoa to convert addresses back to strings for sock.bind calls.
ce-rvi
committed