Different delays in parallel instances of 3.48

["Jeff Gercken" <JeffG () kizan com>]

I'm having some problems specifying delay between packets on Nmap 3.48.
Using Redhat w/ kernel 2.4.20-20.8.
When running 4 parallel instances of:
nmap -sT -P0 -T2  -v -n -F <ip>

Instance 1 (delay of .4 seconds)
05:31:04.852643 <source IP>.51406 > <IP3>.54320: S 1776997372:1776997372(0) win 5840 <mss 1460,sackOK,timestamp 
462225880[|tcp]> (DF)
05:31:05.272557 <source IP>.51407 > <IP3>.2046: S 1776816491:1776816491(0) win 5840 <mss 1460,sackOK,timestamp 
462225922[|tcp]> (DF)
05:31:05.680632 <source IP>.51408 > <IP3>.465: S 1779787871:1779787871(0) win 5840 <mss 1460,sackOK,timestamp 
462225963[|tcp]> (DF)

Instance 2 (delay of 3 seconds)
05:31:22.722949 <source IP>.36775 > <IP2>.193: S 198884589:198884589(0) win 5840 <mss 1460,sackOK,timestamp 
461669585[|tcp]> (DF)
05:31:25.722802 <source IP>.36775 > <IP2>.193: S 198884589:198884589(0) win 5840 <mss 1460,sackOK,timestamp 
461669885[|tcp]> (DF)
05:31:28.742923 <source IP>.36793 > <IP2>.193: S 191583773:191583773(0) win 5840 <mss 1460,sackOK,timestamp 
461670187[|tcp]> (DF)

Instance 3  (delay of .4 seconds)
05:31:30.646435 <source IP>.58424 > <IP3>.998: S 4162540522:4162540522(0) win 5840 <mss 1460,sackOK,timestamp 
463266583[|tcp]> (DF)
05:31:31.066437 <source IP>.58426 > <IP3>.998: S 4162374129:4162374129(0) win 5840 <mss 1460,sackOK,timestamp 
463266625[|tcp]> (DF)
05:31:31.486433 <source IP>.58428 > <IP3>.998: S 4169045820:4169045820(0) win 5840 <mss 1460,sackOK,timestamp 
463266667[|tcp]> (DF)

Instance4 (delay of 3 seconds)
05:31:30.754145 <source IP>.55227 > <IP4>.508: S 3873898911:3873898911(0) win 5840 <mss 1460,sackOK,timestamp 
457541936[|tcp]> (DF)
05:31:33.754016 <source IP>.55227 > <IP4>.508: S 3873898911:3873898911(0) win 5840 <mss 1460,sackOK,timestamp 
457542236[|tcp]> (DF)
05:31:36.774275 <source IP>.55245 > <IP4>.508: S 3870091498:3870091498(0) win 5840 <mss 1460,sackOK,timestamp 
457542538[|tcp]> (DF)

Am I missing something?
Thanks,
Jeff

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