sixlowpan: check the first 2 bits of dispatch byte
sixlowpan: check the first 2 bits of dispatch byte

authmillenon/RIOT,aeneby/RIOT,jremmert-phytec-iot/RIOT,Hyungsin/RIOT-OS,Hyungsin/RIOT-OS,kYc0o/RIOT,malosek/RIOT,rajma996/RIOT,dailab/RIOT,thomaseichinger/RIOT,jbeyerstedt/RIOT-OTA-update,BytesGalore/RIOT,dkm/RIOT,lazytech-org/RIOT,kbumsik/RIOT,adrianghc/RIOT,backenklee/RIOT,A-Paul/RIOT,d00616/RIOT,attdona/RIOT,x3ro/RIOT,neumodisch/RIOT,LudwigKnuepfer/RIOT,jremmert-phytec-iot/RIOT,dailab/RIOT,ks156/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,brettswann/RIOT,katezilla/RIOT,mfrey/RIOT,attdona/RIOT,kerneltask/RIOT,yogo1212/RIOT,jremmert-phytec-iot/RIOT,Yonezawa-T2/RIOT,shady33/RIOT,kaspar030/RIOT,rakendrathapa/RIOT,altairpearl/RIOT,x3ro/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,rajma996/RIOT,neiljay/RIOT,tfar/RIOT,mtausig/RIOT,LudwigKnuepfer/RIOT,mfrey/RIOT,neiljay/RIOT,kYc0o/RIOT,OTAkeys/RIOT,toonst/RIOT,syin2/RIOT,mtausig/RIOT,plushvoxel/RIOT,kb2ma/RIOT,cladmi/RIOT,LudwigKnuepfer/RIOT,immesys/RiSyn,rakendrathapa/RIOT,katezilla/RIOT,jfischer-phytec-iot/RIOT,neiljay/RIOT,wentaoshang/RIOT,smlng/RIOT,yogo1212/RIOT,backenklee/RIOT,RIOT-OS/RIOT,miri64/RIOT,roberthartung/RIOT,Josar/RIOT,adjih/RIOT,kb2ma/RIOT,aeneby/RIOT,Ell-i/RIOT,TobiasFredersdorf/RIOT,kb2ma/RIOT,kerneltask/RIOT,lazytech-org/RIOT,FrancescoErmini/RIOT,jremmert-phytec-iot/RIOT,OlegHahm/RIOT,adrianghc/RIOT,mtausig/RIOT,beurdouche/RIOT,hamilton-mote/RIOT-OS,ks156/RIOT,jbeyerstedt/RIOT-OTA-update,neumodisch/RIOT,wentaoshang/RIOT,rajma996/RIOT,plushvoxel/RIOT,kerneltask/RIOT,lazytech-org/RIOT,kb2ma/RIOT,josephnoir/RIOT,tfar/RIOT,jbeyerstedt/RIOT-OTA-update,mfrey/RIOT,gautric/RIOT,beurdouche/RIOT,syin2/RIOT,jfischer-phytec-iot/RIOT,rfuentess/RIOT,authmillenon/RIOT,kaleb-himes/RIOT,A-Paul/RIOT,cladmi/RIOT,backenklee/RIOT,malosek/RIOT,hamilton-mote/RIOT-OS,shady33/RIOT,biboc/RIOT,Yonezawa-T2/RIOT,BytesGalore/RIOT,BytesGalore/RIOT,immesys/RiSyn,foss-for-synopsys-dwc-arc-processors/RIOT,OlegHahm/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,LudwigOrtmann/RIOT,jasonatran/RIOT,dkm/RIOT,kbumsik/RIOT,immesys/RiSyn,Yonezawa-T2/RIOT,basilfx/RIOT,cladmi/RIOT,LudwigOrtmann/RIOT,mfrey/RIOT,hamilton-mote/RIOT-OS,yogo1212/RIOT,aeneby/RIOT,RIOT-OS/RIOT,cladmi/RIOT,jfischer-phytec-iot/RIOT,d00616/RIOT,gautric/RIOT,kYc0o/RIOT,ant9000/RIOT,plushvoxel/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,jasonatran/RIOT,rajma996/RIOT,rfuentess/RIOT,LudwigOrtmann/RIOT,jasonatran/RIOT,plushvoxel/RIOT,kYc0o/RIOT,FrancescoErmini/RIOT,toonst/RIOT,rousselk/RIOT,wentaoshang/RIOT,kaleb-himes/RIOT,adjih/RIOT,authmillenon/RIOT,backenklee/RIOT,dailab/RIOT,RIOT-OS/RIOT,jremmert-phytec-iot/RIOT,neiljay/RIOT,OTAkeys/RIOT,Yonezawa-T2/RIOT,TobiasFredersdorf/RIOT,mfrey/RIOT,kerneltask/RIOT,Yonezawa-T2/RIOT,kYc0o/RIOT,alignan/RIOT,brettswann/RIOT,basilfx/RIOT,ant9000/RIOT,zhuoshuguo/RIOT,roberthartung/RIOT,shady33/RIOT,MohmadAyman/RIOT,attdona/RIOT,OlegHahm/RIOT,jremmert-phytec-iot/RIOT,Josar/RIOT,Ell-i/RIOT,thomaseichinger/RIOT,Josar/RIOT,josephnoir/RIOT,katezilla/RIOT,backenklee/RIOT,OlegHahm/RIOT,rajma996/RIOT,miri64/RIOT,ant9000/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,biboc/RIOT,katezilla/RIOT,A-Paul/RIOT,kbumsik/RIOT,altairpearl/RIOT,attdona/RIOT,shady33/RIOT,aeneby/RIOT,Ell-i/RIOT,altairpearl/RIOT,OlegHahm/RIOT,dkm/RIOT,malosek/RIOT,miri64/RIOT,yogo1212/RIOT,alignan/RIOT,lazytech-org/RIOT,dailab/RIOT,FrancescoErmini/RIOT,kbumsik/RIOT,rousselk/RIOT,hamilton-mote/RIOT-OS,asanka-code/RIOT,kb2ma/RIOT,syin2/RIOT,gautric/RIOT,ant9000/RIOT,LudwigOrtmann/RIOT,thomaseichinger/RIOT,gebart/RIOT,gebart/RIOT,neumodisch/RIOT,toonst/RIOT,Hyungsin/RIOT-OS,neumodisch/RIOT,adrianghc/RIOT,asanka-code/RIOT,rousselk/RIOT,adrianghc/RIOT,zhuoshuguo/RIOT,d00616/RIOT,TobiasFredersdorf/RIOT,gebart/RIOT,thomaseichinger/RIOT,wentaoshang/RIOT,kaleb-himes/RIOT,gebart/RIOT,kaspar030/RIOT,tfar/RIOT,mtausig/RIOT,Ell-i/RIOT,rakendrathapa/RIOT,rfuentess/RIOT,dkm/RIOT,LudwigKnuepfer/RIOT,malosek/RIOT,LudwigKnuepfer/RIOT,jasonatran/RIOT,rfuentess/RIOT,neiljay/RIOT,basilfx/RIOT,OTAkeys/RIOT,zhuoshuguo/RIOT,adjih/RIOT,alignan/RIOT,MohmadAyman/RIOT,rousselk/RIOT,RIOT-OS/RIOT,smlng/RIOT,MohmadAyman/RIOT,adjih/RIOT,rakendrathapa/RIOT,brettswann/RIOT,gebart/RIOT,FrancescoErmini/RIOT,adjih/RIOT,brettswann/RIOT,kaspar030/RIOT,immesys/RiSyn,altairpearl/RIOT,kaleb-himes/RIOT,cladmi/RIOT,rfuentess/RIOT,jbeyerstedt/RIOT-OTA-update,altairpearl/RIOT,LudwigOrtmann/RIOT,kaleb-himes/RIOT,jasonatran/RIOT,rakendrathapa/RIOT,aeneby/RIOT,rousselk/RIOT,neumodisch/RIOT,x3ro/RIOT,x3ro/RIOT,shady33/RIOT,OTAkeys/RIOT,Hyungsin/RIOT-OS,avmelnikoff/RIOT,ks156/RIOT,beurdouche/RIOT,thomaseichinger/RIOT,TobiasFredersdorf/RIOT,rajma996/RIOT,Josar/RIOT,plushvoxel/RIOT,brettswann/RIOT,avmelnikoff/RIOT,smlng/RIOT,basilfx/RIOT,kbumsik/RIOT,Yonezawa-T2/RIOT,wentaoshang/RIOT,alignan/RIOT,adrianghc/RIOT,gautric/RIOT,toonst/RIOT,asanka-code/RIOT,MohmadAyman/RIOT,basilfx/RIOT,katezilla/RIOT,rousselk/RIOT,josephnoir/RIOT,d00616/RIOT,jbeyerstedt/RIOT-OTA-update,A-Paul/RIOT,MohmadAyman/RIOT,malosek/RIOT,BytesGalore/RIOT,TobiasFredersdorf/RIOT,yogo1212/RIOT,FrancescoErmini/RIOT,beurdouche/RIOT,biboc/RIOT,x3ro/RIOT,hamilton-mote/RIOT-OS,d00616/RIOT,asanka-code/RIOT,FrancescoErmini/RIOT,josephnoir/RIOT,roberthartung/RIOT,biboc/RIOT,ks156/RIOT,wentaoshang/RIOT,syin2/RIOT,Ell-i/RIOT,miri64/RIOT,kaspar030/RIOT,smlng/RIOT,asanka-code/RIOT,tfar/RIOT,jfischer-phytec-iot/RIOT,zhuoshuguo/RIOT,malosek/RIOT,ant9000/RIOT,syin2/RIOT,authmillenon/RIOT,ks156/RIOT,attdona/RIOT,LudwigOrtmann/RIOT,biboc/RIOT,miri64/RIOT,josephnoir/RIOT,MohmadAyman/RIOT,jfischer-phytec-iot/RIOT,zhuoshuguo/RIOT,brettswann/RIOT,kaspar030/RIOT,toonst/RIOT,gautric/RIOT,immesys/RiSyn,OTAkeys/RIOT,kerneltask/RIOT,altairpearl/RIOT,rakendrathapa/RIOT,d00616/RIOT,alignan/RIOT,Josar/RIOT,zhuoshuguo/RIOT,roberthartung/RIOT,BytesGalore/RIOT,authmillenon/RIOT,neumodisch/RIOT,avmelnikoff/RIOT,asanka-code/RIOT,yogo1212/RIOT,avmelnikoff/RIOT,lazytech-org/RIOT,roberthartung/RIOT,avmelnikoff/RIOT,attdona/RIOT,Hyungsin/RIOT-OS,smlng/RIOT,tfar/RIOT,immesys/RiSyn,shady33/RIOT,beurdouche/RIOT,mtausig/RIOT,dkm/RIOT,A-Paul/RIOT,dailab/RIOT