acl localnet src 0.0.0.1-0.255.255.255	# RFC 1122 "this" network (LAN)
acl localnet src 10.0.0.0/8		# RFC 1918 local private network (LAN)
acl localnet src 100.64.0.0/10		# RFC 6598 shared address space (CGN)
acl localnet src 169.254.0.0/16 	# RFC 3927 link-local (directly plugged) machines
acl localnet src 172.16.0.0/12		# RFC 1918 local private network (LAN)
acl localnet src 192.168.0.0/16		# RFC 1918 local private network (LAN)
acl localnet src fc00::/7       	# RFC 4193 local private network range
acl localnet src fe80::/10      	# RFC 4291 link-local (directly plugged) machines

# Caching
cache_dir aufs /var/spool/squid 40000 16 256
maximum_object_size 4 GB

## In-memory caching
cache_mem 256 MB
maximum_object_size_in_memory 5 MB

## Always refresh Packages and Release files
refresh_pattern \/(Packages|Sources)(|\.bz2|\.gz|\.xz)$ 0 0% 0 refresh-ims
refresh_pattern \/Release(|\.gpg)$ 0 0% 0 refresh-ims
refresh_pattern \/InRelease$ 0 0% 0 refresh-ims
refresh_pattern \/(Translation-.*)(|\.bz2|\.gz|\.xz)$ 0 0% 0 refresh-ims

## Handle meta-release and changelogs.ubuntu.com special
refresh_pattern changelogs.ubuntu.com\/.*  0  1% 1

## Archive files: cache them for 90 days
refresh_pattern deb$   129600 100% 129600
refresh_pattern udeb$   129600 100% 129600
refresh_pattern tar.gz$  129600 100% 129600
refresh_pattern tar.xz$  129600 100% 129600
refresh_pattern tar.bz2$  129600 100% 129600

## Docker: cache for 24h (min) to 7 days (max)
refresh_pattern -i (/blobs/sha256)     1440 99% 10080  ignore-no-store ignore-private override-expire store-stale reload-into-ims
refresh_pattern -i (/images/sha256)    1440 99% 10080  ignore-no-store ignore-private override-expire store-stale reload-into-ims
refresh_pattern -i (/manifests/)       1440 99% 10080  ignore-no-store ignore-private override-expire store-stale reload-into-ims

## Default: cache everything for 0h (min) to 72h (max)
refresh_pattern .       0   20% 4320

http_port 3128

max_filedescriptors 1024

http_access allow localhost
http_access allow localnet

dns_v4_first on