19870: tests/gcoap_fileserver: only enable test with GCC r=benpicco a=benpicco
19900: gnrc_ipv6_nib: fix for border router with non-6lo interfaces r=benpicco a=benpicco
19902: tests/pkg/relic: skip CI testing with samr21-xpro and llvm toolchain r=benpicco a=aabadie
Co-authored-by: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Co-authored-by: Benjamin Valentin <benjamin.valentin@bht-berlin.de>
Co-authored-by: Alexandre Abadie <alexandre.abadie@inria.fr>