the SRX110 and SRX220H2 did not go EoL - but I agree, there are too many features missing without a reasonable alternative (no dynamic vpn, no NAT or VPN-termination on IRB-interfaces - and the worst one: No built-in DHCP server if you use IRB's!).
The software features is IMHO no ready for full scale production. I have stated this to the SEs and AMs multiple times but no useful feedback from the SRX/Security business unit.
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Best regards,
Jonas Hauge