Firewalld on 20.04 question

[Jerry Geis]

I have set the firewall to drop "many" address - seems to work EXCEPT for
this address


 bash -x ./firewall_redo.sh
+ firewall-cmd --zone=drop --add-source=204.186.234.0/24
Warning: ZONE_ALREADY_SET: '204.186.234.0/24' already bound to 'drop'
success
+ firewall-cmd --zone=drop --add-source=204.186.234.238
Warning: ZONE_ALREADY_SET: '204.186.234.238' already bound to 'drop'
success



but I still get these connection attempts from this address
[Jul 13 12:48:49] NOTICE[217766] chan_sip.c:    -- Registration for '
650 at 204.186.234.238' timed out, trying again (Attempt #673)
[Jul 13 12:49:09] NOTICE[217766] chan_sip.c:    -- Registration for '
650 at 204.186.234.238' timed out, trying again (Attempt #674)
[Jul 13 12:49:29] NOTICE[217766] chan_sip.c:    -- Registration for '
650 at 204.186.234.238' timed out, trying again (Attempt #675)
[Jul 13 12:49:49] NOTICE[217766] chan_sip.c:    -- Registration for '
650 at 204.186.234.238' timed out, trying again (Attempt #676)
[Jul 13 12:50:09] NOTICE[217766] chan_sip.c:    -- Registration for '
650 at 204.186.234.238' timed out, trying again (Attempt #677)

I entered two tries to block that address - why is it not doing it ?
its ALREADY being blocked - but still going through.

Jerry
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