Merge branch 'eltex_esr_ipv4' into 'master'

Fix Eltex.ESR.get_interfaces script

See merge request !6905

(cherry picked from commit d210d9d0)

4723ff35 Fix Eltex.ESR.get_interfaces script
6 jobs for !6906 with cherry-pick-d210d9d0 in 27 minutes and 22 seconds (queued for 5 seconds)
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