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Does anyone know of any FOSS tools that can assist in benchmarking ISC DNS and DHCP services? I would like to simulate X number of users attempting to pull an IP, resolve DNS names, etc. I would also like to test TCP connections into a CentOS server. We have some software that communicates with equipment via a TCP connection and I want to simulate thousands of TCP connections coming into one

.... 2770: 47 46 58 30 50 44 52 44 42 52 54 4e 0a 87 a0 09 GFX0PDRDBRTN.... 2780: 7b 56 44 52 56 0a 02 00 a1 07 53 45 43 53 0a 88 {VDRV.....SECS.. 2790: 14 4f 04 5f 51 36 34 00 50 38 58 48 00 0a 64 a0 .O._Q64.P8XH..d. 27a0: 38 92 95 4f 53 59 53 0b d6 07 53 45 43 53 0a 89 8..OSYS...SECS.. 27b0: a0 1d 7b 56 44 52 56 01 00 a0 14 92 5e 5e 5e 2e ..{VDRV.....^^^. 27c0: 47 46 58 30 50 44 52 44 42 52 54 4e 0a 86 a0 09 GFX0PDRDBRTN.... 27d0: 7b 56 44 52 56 0a 02 00 a1 07 53 45 43 53 0a 89 {VDRV.....SECS.. 27e0: 14 0d 5f 51 36 35 00 50 38 58 48 00 0a 65 14 1c .._Q65.P8XH..e.. 27f0: 5f...