Squashed commit of the following:

commit f7d0f3d757b9feb44ff12a9415e743d5a855d359
Author: Simon <simon@gb7fr.org.uk>
Date:   Mon Feb 28 19:05:49 2022 +0000

    flarty

commit 2e96ec12dede313c67d6340b8246351c66d134e6
Author: Simon <simon@gb7fr.org.uk>
Date:   Sun Feb 27 18:59:09 2022 +0000

    dflvkjl

commit 3298d6c3236ab65c8d34a357f33c6166d26262fb
Author: Simon <simon@gb7fr.org.uk>
Date:   Sun Feb 27 18:57:43 2022 +0000

    fdkgvjdksj

commit 471db6275c6860f60a18e0fbdcb20254eb983b79
Author: Simon <simon@gb7fr.org.uk>
Date:   Sun Feb 27 18:55:11 2022 +0000

    ffj

commit 845a441b861ebfd182a98bb6c18ce1453a2c4a60
Author: Simon <simon@gb7fr.org.uk>
Date:   Sun Feb 27 18:52:54 2022 +0000

    frdo

commit 9db3124d3770ab2d2ac80c2d908b077dad44278d
Author: Simon <simon@gb7fr.org.uk>
Date:   Sun Feb 27 18:50:08 2022 +0000

    fod

commit ec4dce00702b4158c10b1d29704676b95670f0e0
Author: Simon <simon@gb7fr.org.uk>
Date:   Sun Feb 27 18:48:38 2022 +0000

    exclude 0

hblink.py

@@ -395,7 +395,15 @@ class OPENBRIDGE(DatagramProtocol):
                     if (int.from_bytes(_timestamp,'big')/1000000000) < (time() - 5):
                         logger.warning('(%s) Packet more than 5s old!, discarding', self._system)
                         return
-                        
+                    
+                    #Discard bad source server 
+                    if (len(str(int.from_bytes(_source_server,'big'))) > 5) or (len(str(int.from_bytes(_source_server,'big'))) < 4) and int.from_bytes(_source_server,'big') > 0:
+                        if _stream_id not in self._laststrid:
+                            logger.warning('(%s) Source Server should be 4 or 5 digits, discarding Src: %s', self._system, int.from_bytes(_source_server,'big'))
+                            self.send_bcsq(_dst_id,_stream_id)
+                            self._laststrid.append(_stream_id)
+                        return
+
                     #Increment max hops
                     _inthops = _hops +1 
                     
@@ -442,12 +450,7 @@ class OPENBRIDGE(DatagramProtocol):
                                 self.send_bcsq(_dst_id,_stream_id)
                                 self._laststrid.append(_stream_id)
                             return
-                
 
-                    
-                    #Remove timestamp from data. For now dmrd_received does not expect it
-                    #Leaving it in screws up the AMBE data
-                    #_data = b''.join([_data[:5],_data[12:]])
                     _data = b''.join([DMRD,_data[4:]])
                     
                     _hops = _inthops.to_bytes(1,'big')