Boot ESXi installer and install to iSCSI

[mcb30]

Which build of iPXE are you using? If it's undionly.kpxe or similar, then you may be unable to use VLANs; it's possible that the underlying UNDI driver configures the NIC for a maximum frame size of 1514 bytes (rather than the 1518 bytes required for the VLAN tag).

Non-maximum-length packets (such as for DHCP and for the small HTTP script download) wouldn't be affected, but you would fail to receive as soon as you attempted a large download. This matches the behaviour that you are seeing.

If this is the problem, then your only option is to use a native iPXE driver instead of undionly.

Michael