Im getting a bad signature verifying the "Packages" file from https://archive.openwrt.org/releases/18.06.1/packages/arm_cortex-a9_vfpv3/base/Packages
gpg --keyid-format 0xlong --verify Packages.asc Packages
gpg: Signature made Thu 30 Aug 2018 09:09:37 UTC
gpg: using RSA key 0x0F20257417E1CE16
gpg: BAD signature from "OpenWrt Release Builder (18.06 Signing Key) openwrt-devel@lists.openwrt.org" [unknown]