Not exactly. They are auto-identifying the IP addresses based on traffic sniffing. So you can do this and work around things, but your new IP will get identified as such and blocked automatically in a few hours.
Oh wow, this is not good. Is it possible to evade this sniffing? I have my own Linode VPS, and have learnt to use Tinc VPN software. I'm learning Mandarin and plan to travel to China in a year or few, so this censorship makes me sad and hits my motivation.
Many of us on the mainland ("us" being the type of people who would read HN) have switched to SSH proxies over port 443. Sshuttle [1] is highly recommended.
I wonder how much longer till Chinese avoidance VPN tech needs to resort to stenography in images to transfer data. Masking data as cat pictures would be slow but not automatically detectable.
China has enough outsourced development teams that blocking SSH would be, I'd think, a measurable drag on that economy. We SSH over 443 as a "just-in-case" since it looks alot like HTTPS.