Comment 2 for bug 921597

I have also had to add additional symlinks:

root@server /var/www/cobbler/repo_mirror/oneiric-amd64/dists/oneiric# tree
.
├── main
│   ├── binary-amd64
│   │   ├── Packages.bz2
│   │   ├── Packages.gz
│   │   └── Release
│   ├── binary-i386 -> /var/www/cobbler/repo_mirror/oneiric-i386/dists/oneiric/main/binary-i386
│   └── debian-installer
│   └── binary-amd64
│   ├── Packages.bz2
│   └── Packages.gz
├── multiverse
│   ├── binary-amd64
│   │   ├── Packages.bz2
│   │   ├── Packages.gz
│   │   └── Release
│   └── binary-i386 -> /var/www/cobbler/repo_mirror/oneiric-i386/dists/oneiric/multiverse/binary-i386
├── Release
├── Release.gpg
├── restricted
│   ├── binary-amd64
│   │   ├── Packages.bz2
│   │   ├── Packages.gz
│   │   └── Release
│   └── binary-i386 -> /var/www/cobbler/repo_mirror/oneiric-i386/dists/oneiric/restricted/binary-i386
└── universe
    ├── binary-amd64
    │   ├── Packages.bz2
    │   ├── Packages.gz
    │   └── Release
    └── binary-i386 -> /var/www/cobbler/repo_mirror/oneiric-i386/dists/oneiric/universe/binary-i386

14 directories, 16 files

This allows apt-get update to work , however as soon as apt-get upgrade tries to pull in packages from the pools, it failes:

root@desktop:/etc/apt# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
  curl icedtea-6-jre-cacao icedtea-6-jre-jamvm libcurl3 libcurl3:i386 libcurl3-gnutls linux-headers-3.0.0-15 linux-headers-3.0.0-15-generic
  linux-image-3.0.0-15-generic linux-libc-dev openjdk-6-jdk openjdk-6-jre openjdk-6-jre-headless openjdk-6-jre-lib thunderbird
  thunderbird-globalmenu thunderbird-gnome-support thunderbird-locale-en thunderbird-locale-en-gb thunderbird-locale-en-us
20 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 115 MB of archives.
After this operation, 1,409 kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Err http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main libcurl3 i386 7.21.6-3ubuntu3.2
  404 Not Found
Get:1 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main libcurl3 amd64 7.21.6-3ubuntu3.2 [230 kB]
Get:2 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main libcurl3-gnutls amd64 7.21.6-3ubuntu3.2 [221 kB]
Get:3 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main linux-image-3.0.0-15-generic amd64 3.0.0-15.26 [37.0 MB]
Get:4 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main curl amd64 7.21.6-3ubuntu3.2 [134 kB]
Get:5 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main linux-headers-3.0.0-15 all 3.0.0-15.26 [11.2 MB]
Get:6 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main linux-headers-3.0.0-15-generic amd64 3.0.0-15.26 [858 kB]
Get:7 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main linux-libc-dev amd64 3.0.0-15.26 [824 kB]
Get:8 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main icedtea-6-jre-cacao amd64 6b23~pre11-0ubuntu1.11.10.1 [419 kB]
Get:9 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main openjdk-6-jre-lib all 6b23~pre11-0ubuntu1.11.10.1 [6,135 kB]
Get:10 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main icedtea-6-jre-jamvm amd64 6b23~pre11-0ubuntu1.11.10.1 [510 kB]
Get:11 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main openjdk-6-jre-headless amd64 6b23~pre11-0ubuntu1.11.10.1 [25.3 MB]
Get:12 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main openjdk-6-jre amd64 6b23~pre11-0ubuntu1.11.10.1 [232 kB]
Get:13 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main openjdk-6-jdk amd64 6b23~pre11-0ubuntu1.11.10.1 [11.0 MB]
Get:14 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main thunderbird-globalmenu amd64 9.0+build2-0ubuntu0.11.10.1 [47.4 kB]
Get:15 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main thunderbird amd64 9.0+build2-0ubuntu0.11.10.1 [20.3 MB]
Get:16 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main thunderbird-gnome-support amd64 9.0+build2-0ubuntu0.11.10.1 [9,208 B]
Get:17 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main thunderbird-locale-en all 1:9.0+build2-0ubuntu0.11.10.1 [343 kB]
Get:18 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main thunderbird-locale-en-gb all 1:9.0+build2-0ubuntu0.11.10.1 [13.9 kB]
Get:19 http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/ oneiric-security/main thunderbird-locale-en-us all 1:9.0+build2-0ubuntu0.11.10.1 [13.9 kB]
Fetched 115 MB in 2s (48.3 MB/s)
Failed to fetch http://192.168.100.41/cblr/repo_mirror/oneiric-amd64-security/pool/main/c/curl/libcurl3_7.21.6-3ubuntu3.2_i386.deb 404 Not Found
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?