Jail to jail network performance?

[Brandon Fosdick]

I have a 5.4-S box running apache2 that's serving data from mysql running on the same box. I'm thinking about putting both in seperate jails, partly for security and partly for practice. Would this impact network performance between the two? Currently the mysql connection is using localhost which I understand to be faster than a network socket. Does jail-to-jail traffic use the same mechanism? or something else?

Thanks