Overwriting default entries

[Garry Glendown]

Given: PPPoE dialup connections to our Cisco router, which authenticates 
through FreeRadius 0.93, working fine as such. Default-entry 
w/fall-through adds some config settings. When I do a "show int viX 
conf", I get the entries displayed that I configured through the default 
entry:

interface Virtual-Access6
 mtu 1456
 ip unnumbered Loopback0
 rate-limit input 128000 7500 7500 conform-action continue 
exceed-action drop
 rate-limit output 1048000 7500 7500 conform-action continue 
exceed-action drop
 ip tcp adjust-mss 1416
 timeout absolute 1439 43
 peer default ip address pool dsl-pool
 keepalive 60
 ppp authentication pap chap ms-chap
end

(the rate-limit entries come from the default)
Now I'm trying to overwrite the default entry, and having mixed success 
... I've tried just about all combinations of "=", ":=" and "+=", but 
either I get double entries, or the default entry is retained while the 
dial-in specific one is ignored ...

Default is configured like this ATM:
DEFAULT Suffix == "@dsl"
        Session-Timeout := `%{expr:86400 - ((%l - 10800) %% 86400)}`,
        Framed-IP-Netmask := "255.255.255.255",
        Cisco-Avpair := "lcp:interface-config#1=rate-limit input 131072 
7500 7500 conform-action continue exceed-action drop",
        Cisco-Avpair += "lcp:interface-config#2=rate-limit output 
1048576 7500 7500 conform-action continue exceed-action drop",
        Cisco-Avpair += "ip:dns-servers=192.135.7.3 212.218.0.3",
        Fall-Through := Yes

Custom entry per dialup looks like this:
[EMAIL PROTECTED]       Auth-Type == Local, Password == "secret"
        Service-Type := Framed-User,
        Framed-IP-Address := 192.168.15.1,
        Framed-Protocol := PPP,
        Cisco-Avpair := "lcp:interface-config#1=rate-limit input 
2304000 7500 7500 conform-action continue exceed-action drop",
        Cisco-Avpair += "lcp:interface-config#2=rate-limit output 
2308000 7500 7500 conform-action continue exceed-action drop"

With this setup, I get this output from "show int viX conf":
interface Virtual-Access3
 mtu 1456
 ip unnumbered Loopback0
 rate-limit input 2304000 7500 7500 conform-action continue 
exceed-action drop
 rate-limit output 1048000 7500 7500 conform-action continue 
exceed-action drop
 rate-limit output 2304000 7500 7500 conform-action continue 
exceed-action drop
 ip tcp adjust-mss 1416
 timeout absolute 50 55
 peer default ip address pool dsl-pool
 keepalive 60
 ppp authentication pap chap ms-chap
end

Any idea?
Tnx, -garry
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