sc_ipv6_nc: make iface optional for add
sc_ipv6_nc: make iface optional for add

kaleb-himes/RIOT,binarylemon/RIOT,hamilton-mote/RIOT-OS,kerneltask/RIOT,binarylemon/RIOT,tfar/RIOT,yogo1212/RIOT,malosek/RIOT,lazytech-org/RIOT,jasonatran/RIOT,Lexandro92/RIOT-CoAP,aeneby/RIOT,ant9000/RIOT,attdona/RIOT,latsku/RIOT,watr-li/RIOT,msolters/RIOT,khhhh/RIOT,thomaseichinger/RIOT,avmelnikoff/RIOT,mfrey/RIOT,yogo1212/RIOT,miri64/RIOT,binarylemon/RIOT,haoyangyu/RIOT,lebrush/RIOT,jbeyerstedt/RIOT-OTA-update,asanka-code/RIOT,aeneby/RIOT,lazytech-org/RIOT,ntrtrung/RIOT,toonst/RIOT,automote/RIOT,dkm/RIOT,dailab/RIOT,khhhh/RIOT,rajma996/RIOT,alignan/RIOT,gbarnett/RIOT,A-Paul/RIOT,Josar/RIOT,abkam07/RIOT,daniel-k/RIOT,herrfz/RIOT,immesys/RiSyn,zhuoshuguo/RIOT,malosek/RIOT,FrancescoErmini/RIOT,syin2/RIOT,kaleb-himes/RIOT,authmillenon/RIOT,thiagohd/RIOT,MarkXYang/RIOT,roberthartung/RIOT,dhruvvyas90/RIOT,abp719/RIOT,FrancescoErmini/RIOT,asanka-code/RIOT,haoyangyu/RIOT,MohmadAyman/RIOT,alex1818/RIOT,backenklee/RIOT,watr-li/RIOT,biboc/RIOT,syin2/RIOT,automote/RIOT,thiagohd/RIOT,backenklee/RIOT,shady33/RIOT,ant9000/RIOT,backenklee/RIOT,Lexandro92/RIOT-CoAP,zhuoshuguo/RIOT,Hyungsin/RIOT-OS,abp719/RIOT,stevenj/RIOT,MonsterCode8000/RIOT,d00616/RIOT,luciotorre/RIOT,miri64/RIOT,automote/RIOT,LudwigKnuepfer/RIOT,stevenj/RIOT,beurdouche/RIOT,josephnoir/RIOT,kaspar030/RIOT,JensErdmann/RIOT,rousselk/RIOT,automote/RIOT,OlegHahm/RIOT,kbumsik/RIOT,luciotorre/RIOT,kaleb-himes/RIOT,aeneby/RIOT,msolters/RIOT,mtausig/RIOT,syin2/RIOT,Osblouf/RIOT,basilfx/RIOT,watr-li/RIOT,aeneby/RIOT,abkam07/RIOT,kaspar030/RIOT,neumodisch/RIOT,openkosmosorg/RIOT,lebrush/RIOT,authmillenon/RIOT,EmuxEvans/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,Yonezawa-T2/RIOT,gautric/RIOT,bartfaizoltan/RIOT,Osblouf/RIOT,BytesGalore/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,rajma996/RIOT,MonsterCode8000/RIOT,DipSwitch/RIOT,kb2ma/RIOT,LudwigKnuepfer/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,rfuentess/RIOT,x3ro/RIOT,rfuentess/RIOT,kYc0o/RIOT,x3ro/RIOT,gbarnett/RIOT,x3ro/RIOT,d00616/RIOT,asanka-code/RIOT,DipSwitch/RIOT,dhruvvyas90/RIOT,jbeyerstedt/RIOT-OTA-update,toonst/RIOT,josephnoir/RIOT,neumodisch/RIOT,LudwigOrtmann/RIOT,Josar/RIOT,l3nko/RIOT,altairpearl/RIOT,BytesGalore/RIOT,Osblouf/RIOT,mziegert/RIOT,kbumsik/RIOT,jasonatran/RIOT,brettswann/RIOT,altairpearl/RIOT,ant9000/RIOT,x3ro/RIOT,DipSwitch/RIOT,attdona/RIOT,kb2ma/RIOT,kYc0o/RIOT,herrfz/RIOT,haoyangyu/RIOT,OlegHahm/RIOT,MohmadAyman/RIOT,Darredevil/RIOT,altairpearl/RIOT,rajma996/RIOT,RubikonAlpha/RIOT,alignan/RIOT,jremmert-phytec-iot/RIOT,mtausig/RIOT,immesys/RiSyn,JensErdmann/RIOT,rousselk/RIOT,msolters/RIOT,rakendrathapa/RIOT,Ell-i/RIOT,cladmi/RIOT,malosek/RIOT,kb2ma/RIOT,RubikonAlpha/RIOT,smlng/RIOT,hamilton-mote/RIOT-OS,gbarnett/RIOT,A-Paul/RIOT,binarylemon/RIOT,RBartz/RIOT,katezilla/RIOT,alignan/RIOT,avmelnikoff/RIOT,patkan/RIOT,l3nko/RIOT,EmuxEvans/RIOT,roberthartung/RIOT,ntrtrung/RIOT,adjih/RIOT,neiljay/RIOT,dhruvvyas90/RIOT,zhuoshuguo/RIOT,kerneltask/RIOT,roberthartung/RIOT,latsku/RIOT,shady33/RIOT,bartfaizoltan/RIOT,mfrey/RIOT,Yonezawa-T2/RIOT,Yonezawa-T2/RIOT,katezilla/RIOT,robixnai/RIOT,watr-li/RIOT,arvindpdmn/RIOT,daniel-k/RIOT,khhhh/RIOT,rajma996/RIOT,kb2ma/RIOT,JensErdmann/RIOT,EmuxEvans/RIOT,syin2/RIOT,binarylemon/RIOT,yogo1212/RIOT,Yonezawa-T2/RIOT,abkam07/RIOT,Darredevil/RIOT,wentaoshang/RIOT,josephnoir/RIOT,LudwigOrtmann/RIOT,Yonezawa-T2/RIOT,RubikonAlpha/RIOT,openkosmosorg/RIOT,backenklee/RIOT,watr-li/RIOT,gautric/RIOT,rakendrathapa/RIOT,biboc/RIOT,kYc0o/RIOT,RBartz/RIOT,MarkXYang/RIOT,adjih/RIOT,Osblouf/RIOT,OTAkeys/RIOT,alex1818/RIOT,mziegert/RIOT,latsku/RIOT,RIOT-OS/RIOT,yogo1212/RIOT,MohmadAyman/RIOT,dailab/RIOT,BytesGalore/RIOT,cladmi/RIOT,thiagohd/RIOT,x3ro/RIOT,hamilton-mote/RIOT-OS,daniel-k/RIOT,jbeyerstedt/RIOT-OTA-update,attdona/RIOT,plushvoxel/RIOT,FrancescoErmini/RIOT,dailab/RIOT,MohmadAyman/RIOT,FrancescoErmini/RIOT,ks156/RIOT,A-Paul/RIOT,tfar/RIOT,neiljay/RIOT,Darredevil/RIOT,ant9000/RIOT,Ell-i/RIOT,arvindpdmn/RIOT,lebrush/RIOT,khhhh/RIOT,syin2/RIOT,kb2ma/RIOT,robixnai/RIOT,dkm/RIOT,brettswann/RIOT,kbumsik/RIOT,kYc0o/RIOT,ThanhVic/RIOT,rakendrathapa/RIOT,jremmert-phytec-iot/RIOT,Yonezawa-T2/RIOT,MarkXYang/RIOT,MonsterCode8000/RIOT,plushvoxel/RIOT,zhuoshuguo/RIOT,asanka-code/RIOT,RIOT-OS/RIOT,arvindpdmn/RIOT,shady33/RIOT,brettswann/RIOT,attdona/RIOT,OlegHahm/RIOT,asanka-code/RIOT,thomaseichinger/RIOT,adjih/RIOT,wentaoshang/RIOT,RIOT-OS/RIOT,kbumsik/RIOT,patkan/RIOT,rakendrathapa/RIOT,shady33/RIOT,katezilla/RIOT,plushvoxel/RIOT,ntrtrung/RIOT,arvindpdmn/RIOT,Josar/RIOT,neumodisch/RIOT,jremmert-phytec-iot/RIOT,gebart/RIOT,ks156/RIOT,kerneltask/RIOT,basilfx/RIOT,authmillenon/RIOT,beurdouche/RIOT,immesys/RiSyn,khhhh/RIOT,beurdouche/RIOT,FrancescoErmini/RIOT,miri64/RIOT,daniel-k/RIOT,brettswann/RIOT,luciotorre/RIOT,stevenj/RIOT,robixnai/RIOT,mfrey/RIOT,RIOT-OS/RIOT,hamilton-mote/RIOT-OS,ThanhVic/RIOT,dailab/RIOT,alex1818/RIOT,neiljay/RIOT,automote/RIOT,Lexandro92/RIOT-CoAP,smlng/RIOT,malosek/RIOT,ThanhVic/RIOT,tfar/RIOT,JensErdmann/RIOT,abkam07/RIOT,l3nko/RIOT,basilfx/RIOT,lebrush/RIOT,neumodisch/RIOT,d00616/RIOT,jfischer-phytec-iot/RIOT,stevenj/RIOT,yogo1212/RIOT,malosek/RIOT,A-Paul/RIOT,adrianghc/RIOT,adrianghc/RIOT,jasonatran/RIOT,thomaseichinger/RIOT,neumodisch/RIOT,brettswann/RIOT,abkam07/RIOT,RBartz/RIOT,immesys/RiSyn,jbeyerstedt/RIOT-OTA-update,daniel-k/RIOT,stevenj/RIOT,watr-li/RIOT,smlng/RIOT,josephnoir/RIOT,mziegert/RIOT,luciotorre/RIOT,alex1818/RIOT,authmillenon/RIOT,rfuentess/RIOT,toonst/RIOT,avmelnikoff/RIOT,Ell-i/RIOT,mtausig/RIOT,TobiasFredersdorf/RIOT,cladmi/RIOT,toonst/RIOT,haoyangyu/RIOT,RBartz/RIOT,aeneby/RIOT,l3nko/RIOT,MohmadAyman/RIOT,gebart/RIOT,mfrey/RIOT,mziegert/RIOT,attdona/RIOT,avmelnikoff/RIOT,OlegHahm/RIOT,patkan/RIOT,arvindpdmn/RIOT,zhuoshuguo/RIOT,Hyungsin/RIOT-OS,jremmert-phytec-iot/RIOT,ntrtrung/RIOT,toonst/RIOT,JensErdmann/RIOT,immesys/RiSyn,LudwigKnuepfer/RIOT,wentaoshang/RIOT,katezilla/RIOT,haoyangyu/RIOT,kerneltask/RIOT,biboc/RIOT,beurdouche/RIOT,rousselk/RIOT,bartfaizoltan/RIOT,attdona/RIOT,abp719/RIOT,msolters/RIOT,OlegHahm/RIOT,shady33/RIOT,jasonatran/RIOT,JensErdmann/RIOT,josephnoir/RIOT,herrfz/RIOT,herrfz/RIOT,plushvoxel/RIOT,basilfx/RIOT,neumodisch/RIOT,FrancescoErmini/RIOT,alignan/RIOT,RubikonAlpha/RIOT,immesys/RiSyn,jremmert-phytec-iot/RIOT,yogo1212/RIOT,BytesGalore/RIOT,DipSwitch/RIOT,kaspar030/RIOT,adjih/RIOT,MarkXYang/RIOT,Josar/RIOT,katezilla/RIOT,thiagohd/RIOT,rousselk/RIOT,alex1818/RIOT,ThanhVic/RIOT,gbarnett/RIOT,dhruvvyas90/RIOT,mfrey/RIOT,gebart/RIOT,alex1818/RIOT,Osblouf/RIOT,abp719/RIOT,kerneltask/RIOT,tfar/RIOT,DipSwitch/RIOT,openkosmosorg/RIOT,jfischer-phytec-iot/RIOT,ks156/RIOT,thiagohd/RIOT,automote/RIOT,patkan/RIOT,Ell-i/RIOT,neiljay/RIOT,gebart/RIOT,openkosmosorg/RIOT,BytesGalore/RIOT,LudwigOrtmann/RIOT,kaleb-himes/RIOT,altairpearl/RIOT,MohmadAyman/RIOT,lebrush/RIOT,MonsterCode8000/RIOT,ntrtrung/RIOT,kbumsik/RIOT,miri64/RIOT,Darredevil/RIOT,tfar/RIOT,l3nko/RIOT,LudwigKnuepfer/RIOT,kaleb-himes/RIOT,khhhh/RIOT,TobiasFredersdorf/RIOT,TobiasFredersdorf/RIOT,rajma996/RIOT,kaspar030/RIOT,ThanhVic/RIOT,robixnai/RIOT,zhuoshuguo/RIOT,LudwigKnuepfer/RIOT,robixnai/RIOT,bartfaizoltan/RIOT,Osblouf/RIOT,abp719/RIOT,biboc/RIOT,lazytech-org/RIOT,latsku/RIOT,herrfz/RIOT,Darredevil/RIOT,EmuxEvans/RIOT,avmelnikoff/RIOT,gautric/RIOT,gebart/RIOT,ks156/RIOT,jbeyerstedt/RIOT-OTA-update,binarylemon/RIOT,Lexandro92/RIOT-CoAP,Lexandro92/RIOT-CoAP,alignan/RIOT,rajma996/RIOT,haoyangyu/RIOT,rfuentess/RIOT,shady33/RIOT,wentaoshang/RIOT,neiljay/RIOT,kaspar030/RIOT,dailab/RIOT,Lexandro92/RIOT-CoAP,altairpearl/RIOT,adrianghc/RIOT,beurdouche/RIOT,jremmert-phytec-iot/RIOT,kYc0o/RIOT,mtausig/RIOT,MarkXYang/RIOT,authmillenon/RIOT,RubikonAlpha/RIOT,dkm/RIOT,LudwigOrtmann/RIOT,Hyungsin/RIOT-OS,jasonatran/RIOT,gbarnett/RIOT,rakendrathapa/RIOT,ks156/RIOT,Hyungsin/RIOT-OS,smlng/RIOT,dkm/RIOT,gbarnett/RIOT,OTAkeys/RIOT,mziegert/RIOT,msolters/RIOT,l3nko/RIOT,thiagohd/RIOT,mtausig/RIOT,dkm/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,bartfaizoltan/RIOT,patkan/RIOT,robixnai/RIOT,miri64/RIOT,ntrtrung/RIOT,rousselk/RIOT,altairpearl/RIOT,RBartz/RIOT,backenklee/RIOT,MarkXYang/RIOT,TobiasFredersdorf/RIOT,mziegert/RIOT,daniel-k/RIOT,lazytech-org/RIOT,RBartz/RIOT,EmuxEvans/RIOT,TobiasFredersdorf/RIOT,plushvoxel/RIOT,Darredevil/RIOT,hamilton-mote/RIOT-OS,adrianghc/RIOT,latsku/RIOT,herrfz/RIOT,arvindpdmn/RIOT,ThanhVic/RIOT,dhruvvyas90/RIOT,Josar/RIOT,adrianghc/RIOT,latsku/RIOT,d00616/RIOT,brettswann/RIOT,rakendrathapa/RIOT,A-Paul/RIOT,jfischer-phytec-iot/RIOT,cladmi/RIOT,RIOT-OS/RIOT,rfuentess/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,adjih/RIOT,lazytech-org/RIOT,malosek/RIOT,OTAkeys/RIOT,msolters/RIOT,ant9000/RIOT,lebrush/RIOT,MonsterCode8000/RIOT,gautric/RIOT,wentaoshang/RIOT,DipSwitch/RIOT,openkosmosorg/RIOT,stevenj/RIOT,abkam07/RIOT,EmuxEvans/RIOT,LudwigOrtmann/RIOT,bartfaizoltan/RIOT,jfischer-phytec-iot/RIOT,OTAkeys/RIOT,Ell-i/RIOT,abp719/RIOT,MonsterCode8000/RIOT,gautric/RIOT,basilfx/RIOT,biboc/RIOT,thomaseichinger/RIOT,smlng/RIOT,OTAkeys/RIOT,RubikonAlpha/RIOT,jfischer-phytec-iot/RIOT,patkan/RIOT,roberthartung/RIOT,thomaseichinger/RIOT,rousselk/RIOT,dhruvvyas90/RIOT,authmillenon/RIOT,d00616/RIOT,luciotorre/RIOT,luciotorre/RIOT,cladmi/RIOT,LudwigOrtmann/RIOT,openkosmosorg/RIOT,asanka-code/RIOT,d00616/RIOT,wentaoshang/RIOT,Hyungsin/RIOT-OS,roberthartung/RIOT