Hello The issue was, that our local mirror was not updated correctly. Now it looks good:
$xzgrep linux-image debian/dists/stable/main/binary-amd64/Packages.xz | grep Filename Filename: pool/main/l/linux/linux-image-4.9.0-8-amd64_4.9.130-2_amd64.deb Filename: pool/main/l/linux/linux-image-4.9.0-8-amd64-dbg_4.9.130-2_amd64.deb Filename: pool/main/l/linux/linux-image-4.9.0-8-rt-amd64_4.9.130-2_amd64.deb Filename: pool/main/l/linux/linux-image-4.9.0-8-rt-amd64-dbg_4.9.130-2_amd64.deb Filename: pool/main/l/linux-latest/linux-image-amd64_4.9+80+deb9u6_amd64.deb Filename: pool/main/l/linux-latest/linux-image-amd64-dbg_4.9+80+deb9u6_amd64.deb Filename: pool/main/l/linux-latest/linux-image-rt-amd64_4.9+80+deb9u6_amd64.deb Filename: pool/main/l/linux-latest/linux-image-rt-amd64-dbg_4.9+80+deb9u6_amd64.deb Regards Martin
